{"title":"Centrifuge Tubes","description":"","products":[{"product_id":"microcentrifuge-tubes-20ml-standard","title":"2.0mL Microcentrifuge Tubes Standard Economy | Globe Scientific","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eThe \u003cstrong\u003e2.0mL Standard Microcentrifuge Tubes\u003c\/strong\u003e from Globe Scientific provide economical large-capacity tubes for routine laboratory work. These polypropylene tubes offer extra volume headspace for applications requiring more sample material without the premium pricing of certified tubes. Ideal for general sample storage, buffer preparation, and everyday centrifugation where RNase\/DNase certification is not required.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"specifications\"\u003e2.0mL Standard Tube Specifications\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 2.0mL with graduation marks\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene (PP)\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eClosure:\u003c\/strong\u003e Attached snap cap\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -80°C to 121°C\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePackaging:\u003c\/strong\u003e 1,000\/bag or 8,000\/case\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"applications\"\u003eGeneral Laboratory Applications\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eThese economy 2.0mL tubes work well for non-critical applications including reagent storage, sample transport, mixing and vortexing, and general-purpose centrifugation. The larger volume accommodates tissue samples, cell suspensions, and applications requiring extra headspace. Compatible with standard microcentrifuge rotors designed for 2.0mL tubes.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"Natural - Bag\/1000","offer_id":48030662787304,"sku":"111568-BAG1000","price":51.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_6bb19fdb-d5ee-4fae-8c38-9c1596958c43.jpg?v=1769715736"},{"product_id":"centrifuge-tubes-111580","title":"5.0 mL Midi Centrifuge Tubes, PP, Screw \u0026 Snap Cap, Graduated — 9 Options, Bulk Cartons | Globe Scientific","description":"\u003ch2\u003eDiamond Midi 5.0 mL Centrifuge Tubes, Polypropylene, Graduated — 9 Options, Bag \u0026amp; Carton Packs\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eGlobe Scientific Diamond Midi 5.0 mL Centrifuge Tube\u003c\/strong\u003e bridges the gap between microcentrifuge and standard conical tubes, giving labs an ergonomic mid-volume format for sample prep, aliquoting, and short-term specimen storage. Molded from clarified polypropylene with printed graduations, these tubes support reliable centrifugation, accurate volume reads, and confident pipetting at the bench.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eMidi Centrifuge Tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\/Size\u003c\/td\u003e\n\u003ctd\u003e5.0 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure\/Cap\u003c\/td\u003e\n\u003ctd\u003eAttached snap cap, separate screw cap, or assembled screw cap (option-dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduation\u003c\/td\u003e\n\u003ctd\u003eGraduated, printed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-sterile or sterile (option-dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003eBag\/carton, varies by option (see table below)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eAvailable Options\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiamond Midi 5.0 mL, PP — Case of 500\u003c\/td\u003e\n\u003ctd\u003e111580\u003c\/td\u003e\n\u003ctd\u003e$144.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5.0 mL, PP, separate blue screw cap, graduated — Case of 500\u003c\/td\u003e\n\u003ctd\u003e111580B\u003c\/td\u003e\n\u003ctd\u003e$144.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5.0 mL, PP, attached snap cap, yellow — Box of 200\u003c\/td\u003e\n\u003ctd\u003e111578Y\u003c\/td\u003e\n\u003ctd\u003e$60.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5.0 mL, PP, attached snap cap, red — Box of 200\u003c\/td\u003e\n\u003ctd\u003e111578R\u003c\/td\u003e\n\u003ctd\u003e$60.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5.0 mL, PP, attached snap cap, green — Box of 200\u003c\/td\u003e\n\u003ctd\u003e111578G\u003c\/td\u003e\n\u003ctd\u003e$60.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5.0 mL, PP, attached snap cap, light-blocking black — Box of 200\u003c\/td\u003e\n\u003ctd\u003e111578BLK\u003c\/td\u003e\n\u003ctd\u003e$60.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5.0 mL, PP, attached snap cap, blue — Box of 200\u003c\/td\u003e\n\u003ctd\u003e111578B\u003c\/td\u003e\n\u003ctd\u003e$60.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5.0 mL, PP, assembled red screw cap, sterile — Box of 200\u003c\/td\u003e\n\u003ctd\u003e111580S\u003c\/td\u003e\n\u003ctd\u003e$69.70\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5.0 mL, PP, assembled blue screw cap, sterile — Box of 200\u003c\/td\u003e\n\u003ctd\u003e111580BS\u003c\/td\u003e\n\u003ctd\u003e$69.70\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMid-volume sample aliquoting and reagent dispensing at the bench\u003c\/li\u003e\n\u003cli\u003eCentrifugation of cell suspensions, lysates, and precipitate pellets\u003c\/li\u003e\n\u003cli\u003eShort- and medium-term storage of biological specimens\u003c\/li\u003e\n\u003cli\u003eColor-coded workflows for sample tracking and batch separation\u003c\/li\u003e\n\u003cli\u003eLight-sensitive assays using the black light-blocking option for fluorophores and photolabile reagents\u003c\/li\u003e\n\u003cli\u003eSterile collection and processing of cell culture or clinical samples (sterile options)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003elabsupplies.com is an authorized Globe Scientific dealer shipping from US inventory. Each bag and carton carries lot numbers to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact our procurement team for volume quotes across the full Diamond Midi range.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhich options are supplied sterile?\u003c\/h3\u003e\n\u003cp\u003eSKUs 111580S and 111580BS are sterile, assembled-screw-cap tubes packed 20\/bag with 10 bags per unit. The snap-cap colored tubes and natural PP options are non-sterile.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between snap cap and screw cap options?\u003c\/h3\u003e\n\u003cp\u003eAttached snap caps (111578 series) offer fast single-handed access for high-throughput work, while separate or assembled screw caps (111580 series) provide a more secure seal for transport and storage.\u003c\/p\u003e\n\u003ch3\u003eWhy choose the black light-blocking tube?\u003c\/h3\u003e\n\u003cp\u003eThe Midnight light-blocking black tube (111578BLK) shields photosensitive samples — such as fluorophores, vitamins, and certain reagents — from light-induced degradation during processing and storage.\u003c\/p\u003e\n\u003ch3\u003eAre these tubes graduated?\u003c\/h3\u003e\n\u003cp\u003eYes. All nine options feature printed graduations on the polypropylene body for quick visual volume estimation up to the 5.0 mL capacity.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n\"@context\": \"https:\/\/schema.org\",\n\"@type\": \"Product\",\n\"name\": \"Diamond Midi 5.0 mL Centrifuge Tubes, Polypropylene, Graduated\",\n\"brand\": {\"@type\": \"Brand\", \"name\": \"Globe Scientific\"},\n\"description\": \"5.0 mL polypropylene midi centrifuge tubes, graduated, with snap or screw caps, sterile and non-sterile options in 9 configurations.\",\n\"sku\": [\"111580\",\"111580B\",\"111578Y\",\"111578R\",\"111578G\",\"111578BLK\",\"111578B\",\"111580S\",\"111580BS\"],\n\"offers\": {\n\"@type\": \"AggregateOffer\",\n\"priceCurrency\": \"USD\",\n\"lowPrice\": \"60.00\",\n\"highPrice\": \"144.00\",\n\"offerCount\": \"9\",\n\"seller\": {\"@type\": \"Organization\", \"name\": \"labsupplies.com\"}\n}\n}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n\"@context\": \"https:\/\/schema.org\",\n\"@type\": \"FAQPage\",\n\"mainEntity\": [\n{\"@type\": \"Question\", \"name\": \"Which options are supplied sterile?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"SKUs 111580S and 111580BS are sterile, assembled-screw-cap tubes packed 20\/bag with 10 bags per unit. The snap-cap colored tubes and natural PP options are non-sterile.\"}},\n{\"@type\": \"Question\", \"name\": \"What is the difference between snap cap and screw cap options?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Attached snap caps (111578 series) offer fast single-handed access for high-throughput work, while separate or assembled screw caps (111580 series) provide a more secure seal for transport and storage.\"}},\n{\"@type\": \"Question\", \"name\": \"Why choose the black light-blocking tube?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Midnight light-blocking black tube (111578BLK) shields photosensitive samples such as fluorophores, vitamins, and certain reagents from light-induced degradation during processing and storage.\"}},\n{\"@type\": \"Question\", \"name\": \"Are these tubes graduated?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. All nine options feature printed graduations on the polypropylene body for quick visual volume estimation up to the 5.0 mL capacity.\"}}\n]\n}\n\u003c\/script\u003e","brand":"Globe Scientific","offers":[{"title":"Diamond Midi 5.0 mL, PP — Case of 500","offer_id":48607941361896,"sku":"111580","price":144.0,"currency_code":"USD","in_stock":true},{"title":"5.0 mL, PP, separate blue screw cap, graduated — Case of 500","offer_id":48607941394664,"sku":"111580B","price":144.0,"currency_code":"USD","in_stock":true},{"title":"5.0 mL, PP, attached snap cap, yellow — Box of 200","offer_id":48607941427432,"sku":"111578Y","price":60.0,"currency_code":"USD","in_stock":true},{"title":"5.0 mL, PP, attached snap cap, red — Box of 200","offer_id":48607941460200,"sku":"111578R","price":60.0,"currency_code":"USD","in_stock":true},{"title":"5.0 mL, PP, attached snap cap, green — Box of 200","offer_id":48607941492968,"sku":"111578G","price":60.0,"currency_code":"USD","in_stock":true},{"title":"5.0 mL, PP, attached snap cap, light-blocking black — Box of 200","offer_id":48607941525736,"sku":"111578BLK","price":60.0,"currency_code":"USD","in_stock":true},{"title":"5.0 mL, PP, attached snap cap, blue — Box of 200","offer_id":48607941558504,"sku":"111578B","price":60.0,"currency_code":"USD","in_stock":true},{"title":"5.0 mL, PP, assembled red screw cap, sterile — Box of 200","offer_id":48607941591272,"sku":"111580S","price":69.7,"currency_code":"USD","in_stock":true},{"title":"5.0 mL, PP, assembled blue screw cap, sterile — Box of 200","offer_id":48607941624040,"sku":"111580BS","price":69.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_5db62528-7310-4267-8132-71497ef04f13.jpg?v=1769722947"},{"product_id":"diamond-midi-centrifuge-tube-5ml-111578","title":"Globe Scientific Diamond Midi Centrifuge Tube 5mL Snap Cap Graduated Natural 200 Per Case 111578","description":"\u003ch2 class=\"my-2\"\u003eDiamond Midi 5mL PP centrifuge tube attached snap cap graduated\u003c\/h2\u003e\u003cbr\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cbr\u003eThis Diamond Midi 5mL polypropylene centrifuge tube with an attached snap cap and graduation markings is designed for micro-volume sample preparation, centrifugation, and storage in research and clinical lab settings. Globe Scientific 111578 provides a natural-color PP tube in a 5mL intermediate format between standard microcentrifuge tubes and 15mL conicals, with an attached snap cap for secure closure and graduation marks for direct volume reading.\u003cbr\u003e\u003c\/p\u003e\u003cbr\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003ePolypropylene construction provides chemical resistance and centrifugation compatibility for micro-volume sample prep.\u003c\/li\u003e\n\u003cli\u003eAttached snap cap provides secure, leak-resistant closure without requiring a separate cap during centrifugation.\u003c\/li\u003e\n\u003cli\u003eGraduation marks enable direct volume reading without a separate measuring vessel during sample preparation.\u003c\/li\u003e\n\u003cli\u003e5mL capacity bridges the gap between 1.5mL microcentrifuge tubes and 15mL conical tubes for mid-volume workflows.\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cbr\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003cbr\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border:1px solid #ddd;\"\u003eMaterial\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003ePolypropylene (Pp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border:1px solid #ddd;\"\u003eVolume\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e5.0 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border:1px solid #ddd;\"\u003eColor\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border:1px solid #ddd;\"\u003eSterility\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border:1px solid #ddd;\"\u003ePack Size\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e200 per case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border:1px solid #ddd;\"\u003eCountry\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003cbr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cbr\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cbr\u003e\u003cp\u003eUse these Diamond Midi 5mL centrifuge tubes for micro-volume sample preparation, centrifugation, and storage in molecular biology, clinical chemistry, and research labs that need an intermediate-capacity snap-cap tube with graduation markings.\u003c\/p\u003e\u003cbr\u003e\u003ch3\u003eAcademic and Institutional Pricing\u003c\/h3\u003e\u003cbr\u003e\u003cp\u003eLabSupplies.com offers tiered quantity pricing for academic and research institutions. As an authorized dealer, we ship directly from USA inventory.\u003c\/p\u003e\u003cbr\u003e\u003cscript type=\"application\/ld+json\"\u003e\u003cbr\/\u003e{\"@context\": \"https:\/\/schema.org\/\", \"@type\": \"Product\", \"name\": \"Globe Scientific Diamond Midi Centrifuge Tube 5mL Snap Cap Graduated Natural 200 Per Case 111578\", \"description\": \"Diamond Midi 5mL PP centrifuge tube, attached snap cap, graduated, natural. Globe Scientific 111578, 200\/case, China-made. Authorized dealer. 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Available in 225mL, 250mL, and 500mL sizes with conical bottoms for efficient pelleting.\u003c\/p\u003e\n\u003ch2 class=\"mb-2 mt-4\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul class=\"list-disc ml-4\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 225mL, 250mL, 500mL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene (PP)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottom:\u003c\/strong\u003e Conical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Caps\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Globe Scientific","offers":[{"title":"White - Bag\/6","offer_id":48030864113896,"sku":"6334-UNIT","price":38.6,"currency_code":"USD","in_stock":true},{"title":"White - Case\/48","offer_id":48030864146664,"sku":"6334-CS","price":235.7,"currency_code":"USD","in_stock":true},{"title":"White - Case\/36","offer_id":48030864179432,"sku":"6338-CS","price":276.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_9d6c6787-6bbf-4671-a4dd-af82771c160e.jpg?v=1769720669"},{"product_id":"centrifuge-tubes-111578s","title":"Diamond Midi Centrifuge Tube, 5.0mL, PP - 5.0mL (111578S)","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLooking for centrifuge tubes that deliver consistent results? The \u003cstrong\u003eDiamond Midi Centrifuge Tube, 5.0mL, PP, Attached Snap Cap, Graduated, Natural, STERILE\u003c\/strong\u003e (111578S) provides sterile packaging ensures contamination-free samples. Available in a convenient box of 200 for your laboratory needs.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"specifications\"\u003eProduct Specifications\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eItem Number:\u003c\/strong\u003e 111578S\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePack Size:\u003c\/strong\u003e Box of 200\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5.0mL\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCertifications:\u003c\/strong\u003e Sterile\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Natural\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Globe Scientific\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"benefits\"\u003eKey Benefits\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eSterile packaging ensures contamination-free samples\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDurable polypropylene construction withstands centrifugation\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"applications\"\u003eApplications\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIdeal for research laboratories, clinical settings, and educational institutions. Compatible with standard laboratory equipment and protocols.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"ordering\"\u003eOrdering Information\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOrder item 111578S in quantities of 200 per box. Need bulk quantities? Contact us for volume pricing on Globe Scientific products.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"Box of 200","offer_id":48030910316776,"sku":"111578S-BOX200","price":66.0,"currency_code":"USD","in_stock":true},{"title":"Case of 2000","offer_id":48030910349544,"sku":"111578S-CS2000","price":657.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_7f571d85-731a-4efe-bea7-77e070970777.jpg?v=1769722950"},{"product_id":"tube-caps-111578ast","title":"Diamond Midi Centrifuge ube, 5.0mL, PP - 5.0mL (111578AST)","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLooking for tube caps that deliver consistent results? The \u003cstrong\u003eDiamond Midi Centrifuge ube, 5.0mL, PP, Attached Snap Cap, Graduated, Assorted Colors\u003c\/strong\u003e (111578AST) provides durable polypropylene construction withstands centrifugation. Available in a convenient box of 200 for your laboratory needs.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"specifications\"\u003eProduct Specifications\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eItem Number:\u003c\/strong\u003e 111578AST\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePack Size:\u003c\/strong\u003e Box of 200\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5.0mL\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Blue, Red\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Globe Scientific\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"benefits\"\u003eKey Benefits\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDurable polypropylene construction withstands centrifugation\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"applications\"\u003eApplications\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIdeal for research laboratories, clinical settings, and educational institutions. Compatible with standard laboratory equipment and protocols.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"ordering\"\u003eOrdering Information\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOrder item 111578AST in quantities of 200 per box. Need bulk quantities? Contact us for volume pricing on Globe Scientific products.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"Box of 200","offer_id":48030910447848,"sku":"111578AST-BOX200","price":60.0,"currency_code":"USD","in_stock":true},{"title":"Case of 2000","offer_id":48030910480616,"sku":"111578AST-CS2000","price":598.5,"currency_code":"USD","in_stock":true}]},{"product_id":"centrifuge-tubes-111578y","title":"Diamond Midi Centrifuge Tube, 5.0mL, PP - 5.0mL (111578Y)","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLooking for centrifuge tubes that deliver consistent results? The \u003cstrong\u003eDiamond Midi Centrifuge Tube, 5.0mL, PP, Attached Snap Cap, Graduated, Yellow\u003c\/strong\u003e (111578Y) provides durable polypropylene construction withstands centrifugation. Available in a convenient box of 200 for your laboratory needs.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"specifications\"\u003eProduct Specifications\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eItem Number:\u003c\/strong\u003e 111578Y\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePack Size:\u003c\/strong\u003e Box of 200\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5.0mL\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Yellow\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Globe Scientific\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"benefits\"\u003eKey Benefits\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDurable polypropylene construction withstands centrifugation\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"applications\"\u003eApplications\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIdeal for research laboratories, clinical settings, and educational institutions. Compatible with standard laboratory equipment and protocols.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"ordering\"\u003eOrdering Information\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOrder item 111578Y in quantities of 200 per box. Need bulk quantities? Contact us for volume pricing on Globe Scientific products.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"Box of 200","offer_id":48030910546152,"sku":"111578Y-BOX200","price":60.0,"currency_code":"USD","in_stock":true},{"title":"Case of 2000","offer_id":48030910578920,"sku":"111578Y-CS2000","price":598.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_83ea9a99-9f02-4824-82b8-7d56be3a9486.jpg?v=1769722951"},{"product_id":"centrifuge-tubes-111578r","title":"Diamond Midi Centrifuge Tube, 5.0mL, PP - 5.0mL (111578R)","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLooking for centrifuge tubes that deliver consistent results? The \u003cstrong\u003eDiamond Midi Centrifuge Tube, 5.0mL, PP, Attached Snap Cap, Graduated, Red\u003c\/strong\u003e (111578R) provides durable polypropylene construction withstands centrifugation. Available in a convenient box of 200 for your laboratory needs.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"specifications\"\u003eProduct Specifications\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eItem Number:\u003c\/strong\u003e 111578R\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePack Size:\u003c\/strong\u003e Box of 200\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5.0mL\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Red\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Globe Scientific\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"benefits\"\u003eKey Benefits\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDurable polypropylene construction withstands centrifugation\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"applications\"\u003eApplications\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIdeal for research laboratories, clinical settings, and educational institutions. Compatible with standard laboratory equipment and protocols.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"ordering\"\u003eOrdering Information\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOrder item 111578R in quantities of 200 per box. Need bulk quantities? Contact us for volume pricing on Globe Scientific products.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"Box of 200","offer_id":48030910644456,"sku":"111578R-BOX200","price":60.0,"currency_code":"USD","in_stock":true},{"title":"Case of 2000","offer_id":48030910677224,"sku":"111578R-CS2000","price":598.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_58813a09-7252-4878-ac47-d3fecf09492b.jpg?v=1769722952"},{"product_id":"centrifuge-tubes-111578g","title":"Diamond Midi Centrifuge Tube, 5.0mL, PP - 5.0mL (111578G)","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLooking for centrifuge tubes that deliver consistent results? The \u003cstrong\u003eDiamond Midi Centrifuge Tube, 5.0mL, PP, Attached Snap Cap, Graduated, Green\u003c\/strong\u003e (111578G) provides durable polypropylene construction withstands centrifugation. Available in a convenient box of 200 for your laboratory needs.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"specifications\"\u003eProduct Specifications\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eItem Number:\u003c\/strong\u003e 111578G\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePack Size:\u003c\/strong\u003e Box of 200\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5.0mL\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Green\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Globe Scientific\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"benefits\"\u003eKey Benefits\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDurable polypropylene construction withstands centrifugation\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"applications\"\u003eApplications\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIdeal for research laboratories, clinical settings, and educational institutions. Compatible with standard laboratory equipment and protocols.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"ordering\"\u003eOrdering Information\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOrder item 111578G in quantities of 200 per box. Need bulk quantities? Contact us for volume pricing on Globe Scientific products.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"Box of 200","offer_id":48030910742760,"sku":"111578G-BOX200","price":60.0,"currency_code":"USD","in_stock":true},{"title":"Case of 2000","offer_id":48030910775528,"sku":"111578G-CS2000","price":598.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_6b78a107-2d28-4e2d-a030-31b5d61a1e95.jpg?v=1769722953"},{"product_id":"centrifuge-tubes-111578blk","title":"Diamond Midi Centrifuge Tube, 5.0mL, PP - 5.0mL (111578BLK)","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLooking for centrifuge tubes that deliver consistent results? The \u003cstrong\u003eDiamond Midi Centrifuge Tube, 5.0mL, PP, Attached Snap Cap, Graduated, Midnight Light Blocking Black\u003c\/strong\u003e (111578BLK) provides durable polypropylene construction withstands centrifugation. Available in a convenient box of 200 for your laboratory needs.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"specifications\"\u003eProduct Specifications\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eItem Number:\u003c\/strong\u003e 111578BLK\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePack Size:\u003c\/strong\u003e Box of 200\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5.0mL\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Globe Scientific\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"benefits\"\u003eKey Benefits\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDurable polypropylene construction withstands centrifugation\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"applications\"\u003eApplications\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIdeal for research laboratories, clinical settings, and educational institutions. Compatible with standard laboratory equipment and protocols.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"ordering\"\u003eOrdering Information\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOrder item 111578BLK in quantities of 200 per box. Need bulk quantities? Contact us for volume pricing on Globe Scientific products.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"Box of 200","offer_id":48030910841064,"sku":"111578BLK-BOX200","price":60.0,"currency_code":"USD","in_stock":true},{"title":"Case of 2000","offer_id":48030910873832,"sku":"111578BLK-CS2000","price":598.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_00cfbb8c-9e08-471d-b1bd-84e8af430738.jpg?v=1769722955"},{"product_id":"centrifuge-tubes-111578b","title":"Diamond Midi Centrifuge Tube, 5.0mL, PP - 5.0mL (111578B)","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLooking for centrifuge tubes that deliver consistent results? The \u003cstrong\u003eDiamond Midi Centrifuge Tube, 5.0mL, PP, Attached Snap Cap, Graduated, Blue\u003c\/strong\u003e (111578B) provides durable polypropylene construction withstands centrifugation. Available in a convenient box of 200 for your laboratory needs.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"specifications\"\u003eProduct Specifications\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eItem Number:\u003c\/strong\u003e 111578B\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePack Size:\u003c\/strong\u003e Box of 200\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5.0mL\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Blue\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Globe Scientific\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"benefits\"\u003eKey Benefits\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDurable polypropylene construction withstands centrifugation\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"applications\"\u003eApplications\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIdeal for research laboratories, clinical settings, and educational institutions. Compatible with standard laboratory equipment and protocols.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"ordering\"\u003eOrdering Information\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOrder item 111578B in quantities of 200 per box. Need bulk quantities? Contact us for volume pricing on Globe Scientific products.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"Box of 200","offer_id":48030910939368,"sku":"111578B-BOX200","price":60.0,"currency_code":"USD","in_stock":true},{"title":"Case of 2000","offer_id":48030910972136,"sku":"111578B-CS2000","price":598.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_0af797a0-6fe7-4586-b532-3f6d03cb4144.jpg?v=1769722958"},{"product_id":"centrifuge-tubes-111578a","title":"Diamond Midi Centrifuge Tube, 5.0mL, PP - 5.0mL (111578A)","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLooking for centrifuge tubes that deliver consistent results? The \u003cstrong\u003eDiamond Midi Centrifuge Tube, 5.0mL, PP, Attached Snap Cap, Graduated, Amber\u003c\/strong\u003e (111578A) provides durable polypropylene construction withstands centrifugation. Available in a convenient box of 200 for your laboratory needs.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"specifications\"\u003eProduct Specifications\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eItem Number:\u003c\/strong\u003e 111578A\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePack Size:\u003c\/strong\u003e Box of 200\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5.0mL\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Amber\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Globe Scientific\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"benefits\"\u003eKey Benefits\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDurable polypropylene construction withstands centrifugation\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"applications\"\u003eApplications\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIdeal for research laboratories, clinical settings, and educational institutions. Compatible with standard laboratory equipment and protocols.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"ordering\"\u003eOrdering Information\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOrder item 111578A in quantities of 200 per box. Need bulk quantities? Contact us for volume pricing on Globe Scientific products.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"Box of 200","offer_id":48030911070440,"sku":"111578A-BOX200","price":60.0,"currency_code":"USD","in_stock":true},{"title":"Case of 2000","offer_id":48030911103208,"sku":"111578A-CS2000","price":598.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_bb3674de-0473-4965-bfef-d3aa8cc99cf3.jpg?v=1769722958"},{"product_id":"centrifuge-tubes-111578","title":"Diamond Midi Centrifuge Tube, 5.0mL, PP - 5.0mL (111578)","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLooking for centrifuge tubes that deliver consistent results? The \u003cstrong\u003eDiamond Midi Centrifuge Tube, 5.0mL, PP, Attached Snap Cap, Graduated, Natural\u003c\/strong\u003e (111578) provides durable polypropylene construction withstands centrifugation. Available in a convenient box of 200 for your laboratory needs.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"specifications\"\u003eProduct Specifications\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eItem Number:\u003c\/strong\u003e 111578\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePack Size:\u003c\/strong\u003e Box of 200\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5.0mL\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Natural\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Globe Scientific\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"benefits\"\u003eKey Benefits\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDurable polypropylene construction withstands centrifugation\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"applications\"\u003eApplications\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIdeal for research laboratories, clinical settings, and educational institutions. Compatible with standard laboratory equipment and protocols.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"ordering\"\u003eOrdering Information\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOrder item 111578 in quantities of 200 per box. Need bulk quantities? Contact us for volume pricing on Globe Scientific products.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"Box of 200","offer_id":48030911201512,"sku":"111578-BOX200","price":60.0,"currency_code":"USD","in_stock":true},{"title":"Case of 2000","offer_id":48030911234280,"sku":"111578-CS2000","price":598.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_61577fa6-dd5e-4441-a9c6-425723405b2a.jpg?v=1769722959"},{"product_id":"centrifuge-tubes-6338","title":"Centrifuge Tube, 500mL Large Volume - 500mL (6338)","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLooking for centrifuge tubes that deliver consistent results? The \u003cstrong\u003eCentrifuge Tube, 500mL Large Volume, Attached White Screw Cap, PP\u003c\/strong\u003e (6338) provides durable polypropylene construction withstands centrifugation. Available in a convenient bag of 6 for your laboratory needs.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"specifications\"\u003eProduct Specifications\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eItem Number:\u003c\/strong\u003e 6338\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePack Size:\u003c\/strong\u003e Bag of 6\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 500mL\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Globe Scientific\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"benefits\"\u003eKey Benefits\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDurable polypropylene construction withstands centrifugation\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"applications\"\u003eApplications\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIdeal for research laboratories, clinical settings, and educational institutions. Compatible with standard laboratory equipment and protocols.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"ordering\"\u003eOrdering Information\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOrder item 6338 in quantities of 6 per bag. Need bulk quantities? Contact us for volume pricing on Globe Scientific products.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"Bag of 6","offer_id":48030911430888,"sku":"6338-BAG6","price":60.4,"currency_code":"USD","in_stock":true},{"title":"Case of 36","offer_id":48030911463656,"sku":"6338-CS36","price":276.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_7c4c7cdb-fd33-4499-9369-a595035da222.jpg?v=1769722967"},{"product_id":"centrifuge-tubes-6336","title":"Centrifuge Tube, 250mL Large Volume - 250mL (6336)","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLooking for centrifuge tubes that deliver consistent results? The \u003cstrong\u003eCentrifuge Tube, 250mL Large Volume, Attached White Screw Cap, PP\u003c\/strong\u003e (6336) provides durable polypropylene construction withstands centrifugation. Available in a convenient bag of 6 for your laboratory needs.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"specifications\"\u003eProduct Specifications\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eItem Number:\u003c\/strong\u003e 6336\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePack Size:\u003c\/strong\u003e Bag of 6\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 250mL\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Globe Scientific\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"benefits\"\u003eKey Benefits\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDurable polypropylene construction withstands centrifugation\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"applications\"\u003eApplications\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIdeal for research laboratories, clinical settings, and educational institutions. Compatible with standard laboratory equipment and protocols.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"ordering\"\u003eOrdering Information\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOrder item 6336 in quantities of 6 per bag. Need bulk quantities? Contact us for volume pricing on Globe Scientific products.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"Bag of 6","offer_id":48030911529192,"sku":"6336-BAG6","price":40.9,"currency_code":"USD","in_stock":true},{"title":"Case of 48","offer_id":48030911561960,"sku":"6336-CS48","price":248.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_3c488e21-5196-43d6-80f2-f4323602948c.jpg?v=1769722970"},{"product_id":"centrifuge-tubes-6334","title":"Centrifuge Tube, 225mL Large Volume - 225mL (6334)","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLooking for centrifuge tubes that deliver consistent results? The \u003cstrong\u003eCentrifuge Tube, 225mL Large Volume, Attached White Screw Cap, PP\u003c\/strong\u003e (6334) provides durable polypropylene construction withstands centrifugation. Available in a convenient bag of 6 for your laboratory needs.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"specifications\"\u003eProduct Specifications\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eItem Number:\u003c\/strong\u003e 6334\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePack Size:\u003c\/strong\u003e Bag of 6\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 225mL\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/p\u003e\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Globe Scientific\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"benefits\"\u003eKey Benefits\u003c\/h2\u003e\u003cul class=\"marker:text-quiet list-disc\"\u003e\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDurable polypropylene construction withstands centrifugation\u003c\/p\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"applications\"\u003eApplications\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIdeal for research laboratories, clinical settings, and educational institutions. Compatible with standard laboratory equipment and protocols.\u003c\/p\u003e\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"ordering\"\u003eOrdering Information\u003c\/h2\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOrder item 6334 in quantities of 6 per bag. Need bulk quantities? Contact us for volume pricing on Globe Scientific products.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"Bag of 6","offer_id":48030911627496,"sku":"6334-BAG6","price":38.6,"currency_code":"USD","in_stock":true},{"title":"Case of 48","offer_id":48030911660264,"sku":"6334-CS48","price":235.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_a856bf5b-796f-42a8-be38-55f928bce18b.jpg?v=1769722969"},{"product_id":"globe-scientific-polypropylenepp-diamond-midi-centrifuge-tub","title":"Globe Scientific Diamond Midi Centrifuge Tube, Pp, Attached Locking Snap Cap, Graduated, Lot Certified: Rnase, Dnase, Pyrogen, Atp And Human Dna Free 5.0 mL","description":"\u003ch1\u003eGlobe Scientific Diamond Midi Centrifuge Tube, Pp, Attached Locking Snap Cap, Graduated, Lot Certified: Rnase, Dnase, Pyrogen, Atp And Human Dna Free 5.0 mL\u003c\/h1\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eGlobe Scientific Diamond Midi Centrifuge Tube, Pp, Attached Locking Snap Cap, Graduated, Lot Certified: Rnase, Dnase, Pyrogen, Atp And Human Dna Free\u003c\/strong\u003e series offers a versatile range of options from \u003cstrong\u003e5.0 mL\u003c\/strong\u003e. This product family includes part numbers: \u003cstrong\u003e111582LK\u003c\/strong\u003e. Manufactured from high-quality \u003cstrong\u003ePOLYPROPYLENE (PP)\u003c\/strong\u003e, these items are designed for precision and durability.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Options:\u003c\/strong\u003e Available in 1 sizes\/styles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Material:\u003c\/strong\u003e POLYPROPYLENE (PP) construction.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Globe Scientific\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e POLYPROPYLENE (PP)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5.0 mL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Numbers In This Series:\u003c\/strong\u003e 111582LK\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cp\u003eWe offer a wide range of packaging options to support your specific inventory requirements. Institutional purchasing and custom order quantities are available upon request.\u003c\/p\u003e","brand":"Globe Scientific","offers":[{"title":"5.0 mL - Bag of 100 (111582LK)","offer_id":48033100890344,"sku":"111582LK-PACK","price":40.5,"currency_code":"USD","in_stock":true},{"title":"5.0 mL - Case of 3000 (111582LK)","offer_id":48033100923112,"sku":"111582LK-CASE","price":1206.1,"currency_code":"USD","in_stock":true},{"title":"5.0 mL - Box of 200 (111578S)","offer_id":48033100955880,"sku":"111578S-PACK","price":66.0,"currency_code":"USD","in_stock":true},{"title":"5.0 mL - Case of 2000 (111578S)","offer_id":48033100988648,"sku":"111578S-CASE","price":657.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/file_a52d7ca7-7dca-4ce0-862a-68875e990fd0.jpg?v=1769817522"},{"product_id":"heathrow-scientific-microcentrifuge-tubes-natural","title":"Heathrow Scientific Microcentrifuge Tubes - HS4323 Series | DNase\/RNase-Free, Autoclavable","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eStop reaching for the wrong tube mid-protocol. Heathrow Scientific natural polypropylene microcentrifuge tubes (HS4422, HS4423, HS4323, HS4325) are engineered so that contamination, cap failure, and tube-to-tube variability are never the variable in your experiment. Certified DNase-free, RNase-free, and pyrogen-free from the factory, autoclavable for secondary sterilization, and rated to 16,400 × g — these tubes cover every routine spin-down, RNA extraction, enzyme aliquot, and PCR setup in the 0.2 mL, 0.5 mL, and 1.5 mL volumes that account for the vast majority of bench-scale molecular biology work. The attached snap cap closes one-handed and is syringe-pierceable, keeping your sample protected between aliquotting steps without opening the tube.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eFeatures and Benefits\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc\"\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCertified DNase-free, RNase-free, and pyrogen-free by lot\u003c\/strong\u003e — every production lot tested and documented; RNA-seq, RT-PCR, and endotoxin-sensitive applications run without tube-sourced contamination as a variable\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eAttached snap cap, syringe-pierceable membrane\u003c\/strong\u003e — one-handed closure keeps both hands in the workflow; pierce the cap with a standard syringe needle (18G–26G) to aliquot without exposing sample contents to ambient contamination between draws\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eFrosted writing area molded into the tube wall\u003c\/strong\u003e — write directly with a permanent marker or lab pencil without a separate label; frosting survives centrifuge cycles and freeze-thaw without flaking or peeling\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eAutoclavable polypropylene — 121°C gravity cycle rated\u003c\/strong\u003e — steam-sterilize before use in sterility-critical applications; the polypropylene formulation withstands standard and pre-vacuum autoclave cycles without deformation\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMax RCF matched to real benchtop centrifuge speeds\u003c\/strong\u003e — 0.2 mL and 0.5 mL rated to 15,000 × g; 1.5 mL rated to 16,400 × g; covers the full speed range of Eppendorf, Thermo, and Heathrow Scientific Sprout microcentrifuges without cap ejection or tube failure\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eImprinted graduation markings for visual volume confirmation\u003c\/strong\u003e — 0.5 mL tube marked at 0.1, 0.3, 0.5 mL; 1.5 mL tube marked at 0.1, 0.5, 1.0 mL; reduces pipetting errors during serial dilutions and reaction master mix setup\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003e1.5 mL available in pack of 500 or 1,000 — same per-unit price floor\u003c\/strong\u003e — pack\/500 (HS4323, $21) for single-bench budgets and storage-limited spaces; pack\/1,000 (HS4325, $19) for high-throughput labs where per-tube cost matters across tens of thousands of tubes per year\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003e0.2 mL (HS4423)\u003c\/th\u003e\n\u003cth\u003e0.5 mL (HS4422)\u003c\/th\u003e\n\u003cth\u003e1.5 mL pk\/500 (HS4323)\u003c\/th\u003e\n\u003cth\u003e1.5 mL pk\/1,000 (HS4325)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHS4423\u003c\/td\u003e\n\u003ctd\u003eHS4422\u003c\/td\u003e\n\u003ctd\u003eHS4323\u003c\/td\u003e\n\u003ctd\u003eHS4325\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003eHeathrow Scientific\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVolume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 mL\u003c\/td\u003e\n\u003ctd\u003e0.5 mL\u003c\/td\u003e\n\u003ctd\u003e1.5 mL\u003c\/td\u003e\n\u003ctd\u003e1.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22 mm\u003c\/td\u003e\n\u003ctd\u003e32 mm\u003c\/td\u003e\n\u003ctd\u003e39 mm\u003c\/td\u003e\n\u003ctd\u003e39 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6.9 mm\u003c\/td\u003e\n\u003ctd\u003e10.1 mm\u003c\/td\u003e\n\u003ctd\u003e10.8 mm\u003c\/td\u003e\n\u003ctd\u003e10.8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGraduations\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003e0.1, 0.3, 0.5 mL\u003c\/td\u003e\n\u003ctd\u003e0.1, 0.5, 1.0 mL\u003c\/td\u003e\n\u003ctd\u003e0.1, 0.5, 1.0 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax RCF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15,000 × g\u003c\/td\u003e\n\u003ctd\u003e15,000 × g\u003c\/td\u003e\n\u003ctd\u003e16,400 × g\u003c\/td\u003e\n\u003ctd\u003e16,400 × g\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003eNatural (translucent)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCap Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003eAttached snap cap, syringe-pierceable\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003eDNase-free, RNase-free, Pyrogen-free\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAutoclavable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003eYes — 121°C gravity cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePack Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1,000\u003c\/td\u003e\n\u003ctd\u003e1,000\u003c\/td\u003e\n\u003ctd\u003e500\u003c\/td\u003e\n\u003ctd\u003e1,000\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eLaboratory Applications\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc\"\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePCR \u0026amp; qPCR Reaction Setup (0.2 mL)\u003c\/strong\u003e — the 0.2 mL format is the standard vessel for individual PCR reactions in thermal cycler blocks; the 15,000 × g rating handles the brief spin-down before cycling; the attached cap seals without deforming during thermocycling in single-reaction strip-free protocols\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eEnzyme \u0026amp; Reagent Aliquoting (0.5 mL)\u003c\/strong\u003e — split restriction enzymes, ligases, and polymerases from stock vials into working aliquots; the syringe-pierceable cap enables closed-system aliquotting that preserves remaining freeze-thaw cycles on expensive enzymes\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eNucleic Acid Extraction \u0026amp; Column Cleanup (1.5 mL)\u003c\/strong\u003e — silica-column kits from Qiagen, Zymo, and Thermo produce eluates collected in 1.5 mL tubes; the 16,400 × g rating handles the high-speed binding and wash steps without tube deformation\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCell Pelleting \u0026amp; Lysate Preparation (1.5 mL)\u003c\/strong\u003e — bacterial and mammalian cell pellets from small culture volumes collect at 6,000–12,000 × g; the translucent natural color allows visual confirmation of pellet formation without opening the tube\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eSample Archival \u0026amp; Biobank Storage (1.5 mL)\u003c\/strong\u003e — polypropylene is compatible with long-term storage at −80°C; the attached cap prevents the cap-loss failure mode common with separate-cap formats during repeated freeze-thaw cycling in active −80°C freezers\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePack of 500 or pack of 1,000 for the 1.5 mL — what is the per-tube cost difference?\u003c\/strong\u003e\u003cbr\u003eThe pack\/500 (HS4323) is $21 — $0.042 per tube. The pack\/1,000 (HS4325) is $19 — $0.019 per tube. The 1,000-count pack cuts per-tube cost by more than half. For any lab using more than one pack per month, the pack\/1,000 is the clear value choice. The pack\/500 suits labs where bench storage space is limited or where a smaller trial quantity is preferred before committing to volume.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eAre these tubes compatible with the Heathrow Scientific Sprout® microcentrifuge?\u003c\/strong\u003e\u003cbr\u003eYes. The 1.5 mL tubes (10.8 mm OD) fit the standard Sprout® and Sprout® Plus rotor directly. The 0.5 mL tubes require the appropriate adapter for the Sprout® rotor — verify your rotor model supports 0.5 mL before ordering. The 0.2 mL tubes are designed for 0.2 mL PCR tube rotor formats — confirm your Sprout® rotor accommodates 0.2 mL before use.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eWhat does \"syringe-pierceable cap\" mean and how do I use it?\u003c\/strong\u003e\u003cbr\u003eThe snap cap membrane is thin enough to be penetrated by a standard syringe needle (18G to 26G) while maintaining a liquid-tight seal around the shaft during the draw. After the needle is withdrawn, the membrane self-seals. This allows repeated sampling from a stock aliquot tube without opening and recapping between draws — particularly useful for expensive enzymes or reagents where minimizing air exposure between uses matters.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCan I autoclave these tubes before use for sterile cell culture applications?\u003c\/strong\u003e\u003cbr\u003eYes. The polypropylene construction withstands standard gravity autoclave cycles at 121°C. Autoclaving does not add to the DNase\/RNase-free factory certification — these tubes are already certified clean. Autoclave when sterility (freedom from viable organisms) is an additional requirement beyond nuclease-free performance, such as for certain cell culture or microinjection protocols.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eQuality Assurance\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eHeathrow Scientific microcentrifuge tubes are manufactured under ISO-certified production controls. Each lot is certified DNase-free, RNase-free, and pyrogen-free with full documentation available for quality system and regulatory records. The syringe-pierceable cap membrane is tested for self-sealing integrity after repeated needle punctures at standard gauge sizes. Tubes ship in sealed bulk packs to maintain certification status.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eAcademic and Institutional Pricing\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLabSupplies.com offers tiered quantity pricing for academic and research institutions. As an authorized dealer, we ship directly from USA inventory.\u003c\/p\u003e","brand":"Heathrow Scientific","offers":[{"title":"0.2 mL \/ Pack of 1,000","offer_id":48074549428456,"sku":"HS4423","price":56.0,"currency_code":"USD","in_stock":true},{"title":"0.5 mL \/ Pack of 1,000","offer_id":48074549461224,"sku":"HS4422","price":39.0,"currency_code":"USD","in_stock":true},{"title":"1.5 mL \/ Pack of 500","offer_id":48074549493992,"sku":"HS4323","price":21.0,"currency_code":"USD","in_stock":true},{"title":"1.5 mL \/ Pack of 1,000","offer_id":48074549526760,"sku":"HS4325","price":19.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/unnamed_6dde6c35-9d74-4679-80cb-b6bf7fb5a730.jpg?v=1771750642"},{"product_id":"heathrow-scientific-microcentrifuge-tubes-1-5ml-black","title":"Heathrow Scientific Black Microcentrifuge Tubes - HS4323K | Light-Sensitive, 18,000 × g","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eA clear tube is a liability when your sample contains fluorescent dyes, luciferase substrates, photolabile crosslinkers, or any compound that degrades under ambient lab lighting. Heathrow Scientific 1.5 mL Black Microcentrifuge Tubes (HS4323K) are injection-molded from opaque black polypropylene to block visible light at the tube wall — at every step, from the bench incubation through centrifugation to short-term storage. Foil-wrapping clear tubes is an unreliable workaround that introduces handling steps and fails the moment the wrap is disturbed. These tubes solve the problem at the material level. Certified DNase-free, RNase-free, and pyrogen-free with a maximum RCF of 18,000 × g — the highest rating in the Heathrow Scientific microtube line.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eFeatures and Benefits\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc\"\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eOpaque black polypropylene blocks visible light across 380–700 nm\u003c\/strong\u003e — eliminates photobleaching of FITC, Cy3, Cy5, PE, APC, and Alexa Fluor conjugates; protects photodegradable substrates (luciferase, psoralen, diazirine-based crosslinkers) during bench incubations, centrifuge runs, and storage\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eHighest RCF in the Heathrow Scientific microtube line — 18,000 × g\u003c\/strong\u003e — the thicker-wall black PP formulation adds structural margin; handles protein aggregate pelleting, silica bead collection, and high-speed clarification steps that push the speed limits of standard benchtop microcentrifuges\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eDNase-free, RNase-free, and pyrogen-free certified\u003c\/strong\u003e — light-sensitivity does not compromise molecular contamination standards; light-sensitive work often overlaps with nuclease-sensitive RNA or protein assays that require the same clean-tube guarantee\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eContrasting-color graduation marks at 0.1, 0.5, 1.0, and 1.5 mL\u003c\/strong\u003e — printed in contrasting color for legibility against the opaque black wall under standard overhead lab lighting without a backlight; full scale to 1.5 mL for complete volume reference\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eAttached flat cap, syringe-pierceable for closed-system aliquotting\u003c\/strong\u003e — closed-system access prevents light entry during repeat sampling; flat cap profile is compatible with most tube label printers and barcode labeling systems used in biobank and sample tracking workflows\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eAutoclavable for combined sterility and light-protection requirements\u003c\/strong\u003e — lentiviral vector production, fluorescent protein expression assays, and bioluminescent construct work may require both sterility and light protection simultaneously; these tubes satisfy both\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHS4323K\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeathrow Scientific\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVolume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e41 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGraduations\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1, 0.5, 1.0, 1.5 mL (contrasting color)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax RCF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18,000 × g\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (PP), opaque black\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCap Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAttached flat cap, syringe-pierceable\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDNase-free, RNase-free, Pyrogen-free\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAutoclavable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes — 121°C gravity cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePack Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTaiwan\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eLaboratory Applications\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc\"\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eImmunofluorescence \u0026amp; Flow Cytometry Sample Prep\u003c\/strong\u003e — antibody-dye conjugates (PE, APC, FITC, Alexa Fluor series) photobleach during 30–60 minute room-temperature or 4°C incubation steps; black tubes preserve signal intensity from staining through acquisition, directly protecting assay sensitivity and MFI accuracy\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eBioluminescence Assays — Luciferase \u0026amp; NanoLuc\u003c\/strong\u003e — luciferase substrate solutions begin degrading within minutes of light exposure; black tubes preserve substrate activity from preparation through the measurement window, protecting the signal dynamic range needed for accurate reporter gene quantification\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePhotolabile Crosslinker \u0026amp; Chemical Biology Workflows\u003c\/strong\u003e — diazirine, benzophenone, and aryl azide crosslinkers must be shielded from all light sources until deliberate UV activation; black tubes protect reagent integrity during conjugation reactions, incubation steps, and pre-activation handling at the bench\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eEnvironmental \u0026amp; Analytical Chemistry with Photodegradable Analytes\u003c\/strong\u003e — certain pesticide residues, pharmaceutical compounds, and environmental contaminants photodegrade on timescales that compromise clear-tube handling; black tubes maintain sample integrity from collection to instrument injection in LC-MS and GC-MS analytical workflows\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eFluorescent Protein Expression \u0026amp; Purification (GFP, mCherry, tdTomato)\u003c\/strong\u003e — bacterial and mammalian lysates containing fluorescent fusion proteins are processed in black tubes to minimize background from photobleached fragments that confound downstream spectrofluorometry or imaging quantification\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eHow much light do these tubes actually block — do I still need to work in a dark room?\u003c\/strong\u003e\u003cbr\u003eThe opaque black polypropylene blocks essentially all visible light transmission (380–700 nm) through the tube wall under standard overhead fluorescent and LED lab lighting. For extremely photolabile compounds with very short photodegradation half-lives (certain psoralen derivatives, some photocleavable protecting groups), working under dim or red safelight during open-tube transfer steps adds an additional margin. Once capped, these tubes provide effective protection for the great majority of light-sensitive lab applications without additional precautions.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eHow do I read the graduation marks on a black tube?\u003c\/strong\u003e\u003cbr\u003eThe graduation marks are printed in a contrasting color visible against the black polypropylene under standard overhead lab lighting. Hold the tube at eye level against a nearby light source for the most accurate reading. The full 0.1, 0.5, 1.0, and 1.5 mL scale is visible without a backlight or UV transilluminator.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eWhy is the max RCF higher on the black tube (18,000 × g) than the natural 1.5 mL tube (16,400 × g)?\u003c\/strong\u003e\u003cbr\u003eThe HS4323K is manufactured in Taiwan to a slightly different wall thickness specification than the China-manufactured natural 1.5 mL tubes. The additional wall thickness in the black formulation provides the higher RCF margin. In practice, most benchtop microcentrifuges top out at 14,000–16,000 × g, so both tubes operate well within their rated limits at maximum machine speed. The higher RCF rating provides additional safety margin for high-speed rotors.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCan I use these for long-term storage at −80°C?\u003c\/strong\u003e\u003cbr\u003eYes. Polypropylene is rated for −80°C storage and standard ultra-low temperature freezer conditions. The attached flat cap prevents the cap-loss failure mode during repeated freeze-thaw cycles. The opaque black wall continues to protect light-sensitive samples during brief light exposure at the freezer door. Label the cap and tube body with a cryogenic-rated marker or cryo-label for identification in −80°C storage.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eQuality Assurance\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eHeathrow Scientific HS4323K Black Microcentrifuge Tubes are manufactured in Taiwan under ISO-certified production controls. Each lot is certified DNase-free, RNase-free, and pyrogen-free with documentation available for quality system and regulatory submissions. The opaque black polypropylene formulation is tested for light-blocking performance across the visible spectrum. The 18,000 × g RCF rating reflects structural testing of cap seal integrity and tube wall performance at maximum centrifugal force. Tubes ship in sealed bulk packs of 500 to maintain certification status.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eAcademic and Institutional Pricing\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLabSupplies.com offers tiered quantity pricing for academic and research institutions. As an authorized dealer, we ship directly from USA inventory.\u003c\/p\u003e","brand":"Heathrow Scientific","offers":[{"title":"1.5 mL \/ Pack of 500","offer_id":48074549559528,"sku":"HS4323K","price":21.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/unnamed_6a23cd23-3ad5-4d66-9960-d1dba2e417f9.jpg?v=1771750643"},{"product_id":"heathrow-scientific-conical-tubes-15ml","title":"Heathrow Scientific 15 mL Sterile Conical Tubes - HS4426 Series | DNase\/RNase-Free, 3-Year Sterility","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eThe 15 mL conical is the most-consumed sterile tube format in cell biology — used for every cell wash, pellet, resuspension, and sample transfer that moves between the biosafety cabinet and the centrifuge multiple times per day. Heathrow Scientific 15 mL Sterile Conical Centrifuge Tubes (HS4426B, HS4426R, HS4428) are individually gamma-irradiated to SAL 10⁻⁶ with a 3-year sterility expiration, certified DNase\/RNase-free by lot, and available in the three configurations that match how labs actually work: natural bulk-wrap (HS4426B) for standard bench use, natural racked (HS4426R) pre-loaded in chipboard racks of 50 for tissue culture and high-throughput workflows, and opaque black (HS4428) for light-sensitive sample processing where a clear tube introduces measurement error that no downstream correction can fix. All three share the same 0.5 mL graduation intervals, 11,000 × g RCF rating, and lot-traceable easy-tear packaging.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eFeatures and Benefits\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc\"\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eIndividually gamma-irradiated, 3-year sterility expiration (SAL 10⁻⁶)\u003c\/strong\u003e — the same sterility assurance level as radiation-sterilized medical devices; the 3-year shelf life means bulk case purchases don't expire before use in most lab environments, justifying the per-case cost savings of volume buying\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eLeak-proof polyethylene screw cap tested under centrifugal load\u003c\/strong\u003e — cap threads torque-tested to maintain seal integrity up to 11,000 × g; sample loss during centrifugation is a non-negotiable failure mode in clinical, bioprocessing, and regulatory-facing applications\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eDNase\/RNase-free certified by lot — documentation available\u003c\/strong\u003e — RNA-seq, RT-PCR, and mRNA extraction workflows use 15 mL conicals at critical steps where nuclease contamination at the tube level introduces assay variability that PCR amplification cannot distinguish from sample biology\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003e0.5 mL graduation intervals to 15 mL — imprinted, not surface-printed\u003c\/strong\u003e — imprinted graduations survive alcohol wiping, water bath immersion, and autoclave cycles without fading or rubbing off; accurate volume reference at every liquid handling step without re-marking\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eRacked format (HS4426R) uses recyclable chipboard — 10 racks × 50 tubes\u003c\/strong\u003e — chipboard racks go straight from storage to biosafety cabinet to centrifuge without intermediate tube handling; reduces single-use plastic waste compared to polypropylene rack formats from other suppliers\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eBlack configuration (HS4428) blocks visible light at the tube wall\u003c\/strong\u003e — opaque polypropylene protects fluorescent staining panels, luciferase reporter substrates, and bioluminescent samples through centrifugation, incubation, and brief bench storage without foil-wrapping workarounds\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eLot-to-lot traceability with easy-tear packaging\u003c\/strong\u003e — lot number on every bag and rack links to production and certification records; satisfies CLIA documentation, ISO 9001 QMS records, and GMP chain-of-custody requirements for regulated research manufacturing\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eNatural \/ Bulk (HS4426B)\u003c\/th\u003e\n\u003cth\u003eNatural \/ Racked (HS4426R)\u003c\/th\u003e\n\u003cth\u003eBlack \/ Bulk (HS4428)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHS4426B\u003c\/td\u003e\n\u003ctd\u003eHS4426R\u003c\/td\u003e\n\u003ctd\u003eHS4428\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003eHeathrow Scientific\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVolume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003e15 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003e120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003e0.7 in (1.7 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGraduations\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003e0.5 mL intervals to 15 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax RCF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003e11,000 × g\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003ctd\u003eBlack (opaque)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCap\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003eLeak-proof polyethylene screw cap\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003eYes — gamma-irradiated, SAL 10⁻⁶\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterility Expiration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003e3 years from manufacture\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDNase\/RNase-Free\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003eYes — lot certified\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAutoclavable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackaging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBulk wrap \/ 500\u003c\/td\u003e\n\u003ctd\u003eRacked (10 × 50pk chipboard) \/ 500\u003c\/td\u003e\n\u003ctd\u003eBulk wrap \/ 500\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003ctd\u003eTaiwan\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eLaboratory Applications\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc\"\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCell Culture — Passaging \u0026amp; Washing (Natural, Bulk or Racked)\u003c\/strong\u003e — spin mammalian cells at 300–400 × g for pellet-wash-resuspend cycles during media exchange and passaging; the racked format eliminates tube handling in the biosafety cabinet where both hands are needed for decant and resuspension; the 3-year sterility expiration supports case-quantity purchasing for high-volume tissue culture rooms\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eBacterial Cell Harvest \u0026amp; Lysis\u003c\/strong\u003e — pellet overnight bacterial cultures at 4,000–6,000 × g for plasmid miniprep, protein expression harvest, or competent cell preparation; the 11,000 × g rating handles the high-speed clarification steps in bacterial lysis protocols without tube deformation or cap seal failure\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eClinical Sample Processing — Serum \u0026amp; Plasma Separation\u003c\/strong\u003e — collect whole blood fractions or urine sediment for research assays; the leak-proof cap satisfies OSHA bloodborne pathogen containment requirements; lot traceability supports CLIA documentation for clinical research laboratories\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eImmunoassay \u0026amp; Flow Cytometry Sample Prep (Black, HS4428)\u003c\/strong\u003e — fluorescent antibody staining panels for flow cytometry require 30–60 minute incubations at 4°C where photobleaching of PE, FITC, and APC conjugates measurably reduces signal in clear tubes; black conicals maintain staining signal through the full prep-to-acquisition workflow\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eBioprocessing \u0026amp; Seed Culture Scale-Up\u003c\/strong\u003e — 15 mL conicals are the standard seed vessel in microbial and mammalian bioprocessing scale-up trains; DNase\/RNase-free certification and lot traceability meet GMP cell banking and process development documentation requirements\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eWhat is the practical difference between bulk-wrap and racked — when does the format matter?\u003c\/strong\u003e\u003cbr\u003eBulk-wrap (HS4426B, $160) arrives in a sealed bag — tubes pulled individually as needed; right for bench protocols where you pull 5–20 tubes at a time. Racked (HS4426R, $160) arrives with 500 tubes pre-loaded in 10 chipboard racks of 50 — carry the rack from storage to the biosafety cabinet to the centrifuge without intermediate handling; right for tissue culture rooms and high-throughput processing lines. Both are the same tube, same certification, same price. Format is a workflow decision only.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eWhat is the maximum centrifuge speed I can use with these tubes?\u003c\/strong\u003e\u003cbr\u003eMaximum rated RCF is 11,000 × g for all three configurations. Mammalian cell pelleting (300–400 × g) and bacterial harvest (4,000–6,000 × g) are both well within this range. For applications requiring forces above 11,000 × g, use microcentrifuge tubes or ultracentrifuge-rated formats — 15 mL polypropylene conicals from any manufacturer are not designed for ultra-high-speed centrifugation.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eAre these tubes compatible with all standard 15 mL conical centrifuge rotors?\u003c\/strong\u003e\u003cbr\u003eYes. These tubes conform to the standard 15 mL conical geometry (17 mm outer diameter, 120 mm height) and fit 15 mL rotor positions in Eppendorf, Thermo Fisher, Beckman Coulter, Hettich, and other major centrifuge rotor lines. For non-standard rotors, verify the tube OD and height against your rotor's tube position specifications before use.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eThe sterility expiration is 3 years — can I trust tubes approaching their expiration date?\u003c\/strong\u003e\u003cbr\u003eThe 3-year sterility guarantee is validated for tubes stored correctly — room temperature, away from UV light, in original sealed packaging with intact seals. Tubes meeting these storage conditions and used before the printed expiration date fully comply with their sterility claim. Always inspect the packaging seal integrity before use — any compromised seal voids the sterility claim regardless of expiration date.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eQuality Assurance\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eHeathrow Scientific 15 mL conical tubes are gamma-irradiated to a sterility assurance level of 10⁻⁶ with a 3-year sterility expiration from the date of manufacture. DNase\/RNase-free certification is documented per lot with records available for quality and regulatory submissions. The HS4426R racked format uses recyclable chipboard racks. The HS4428 black variant is manufactured in Taiwan to identical certification standards as the natural China-manufactured variants. All tubes comply with ISO general labware standards for polypropylene centrifuge tube geometry and performance.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eAcademic and Institutional Pricing\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLabSupplies.com offers tiered quantity pricing for academic and research institutions. As an authorized dealer, we ship directly from USA inventory.\u003c\/p\u003e","brand":"Heathrow Scientific","offers":[{"title":"Natural \/ Bulk Wrap","offer_id":48074549592296,"sku":"HS4426B","price":160.0,"currency_code":"USD","in_stock":true},{"title":"Natural \/ Racked","offer_id":48074549625064,"sku":"HS4426R","price":152.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Bulk Wrap","offer_id":48074549657832,"sku":"HS4428","price":241.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/unnamed_083720bb-bf0c-4bb3-9668-4497969a1a10.jpg?v=1771750644"},{"product_id":"heathrow-scientific-conical-tubes-50ml","title":"Heathrow Scientific 50 mL Sterile Conical Tubes - HS4427 Series | DNase\/RNase-Free, 4 Configurations","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eThe 50 mL conical is the highest-volume format that fits a standard benchtop centrifuge rotor — and the range of decisions that come with ordering it is wider than any other tube format in the lab. Heathrow Scientific 50 mL Sterile Conical Centrifuge Tubes cover every configuration this format comes in: natural translucent bulk-wrap (HS4427B) for standard bench use, natural racked (HS4427R) pre-loaded in chipboard racks of 25 for tissue culture workflows where tubes go from storage to centrifuge without intermediate handling, natural skirted-bottom bulk-wrap (HS4427S) for hands-free self-standing during sample additions, and opaque black bulk-wrap (HS4429) for light-sensitive samples that cannot tolerate ambient photon exposure during any processing step. All four are individually gamma-sterile with a 3-year shelf life, DNase\/RNase-free by lot, and rated between 9,400 and 9,500 × g — the performance specs that matter in the protocols that define this tube size.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eFeatures and Benefits\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc\"\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eGamma-irradiated to SAL 10⁻⁶, 3-year sterility expiration across all four configurations\u003c\/strong\u003e — the same sterility assurance level regardless of natural\/black or bulk\/racked format; bulk case purchasing within the 3-year window is validated and cost-effective for high-volume labs\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eSkirted bottom (HS4427S) stands upright on any flat surface without a rack\u003c\/strong\u003e — the skirted base prevents dropped tubes during reagent addition and resuspension steps when both hands are occupied; eliminates the rack requirement in biosafety cabinets where surface real estate is limited\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eRacked format (HS4427R) ships 20 racks × 25 tubes — chipboard, recyclable\u003c\/strong\u003e — racks transport from storage shelf to centrifuge and back to the biosafety cabinet without intermediate tube handling; recyclable chipboard reduces single-use plastic waste in high-throughput labs versus polypropylene rack alternatives\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eImprinted 5 mL graduations to 50 mL — molded into tube wall, not surface-printed\u003c\/strong\u003e — survive repeated washing, media immersion, and alcohol decontamination without fading; provide accurate volume reference for media additions and resuspension steps without measuring cylinder transfers\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eFlat polyethylene screw cap with writing area accepts labels and markers\u003c\/strong\u003e — flat cap top compatible with permanent marker and laboratory label printers for barcode and QR code labels used in LIMS-integrated sample tracking\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eBlack configuration (HS4429) rated to 9,400 × g — opaque at all processing steps\u003c\/strong\u003e — same light-blocking polypropylene as the black 15 mL and microtube formats; processes large-volume PBMC isolations, viral supernatants, and bioluminescent samples through centrifugation and incubation without foil wrapping\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eDNase\/RNase-free certified with lot-to-lot traceability\u003c\/strong\u003e — large-volume mRNA preparation, RNA extraction from bulk tissue, and viral vector production use 50 mL conicals at steps where nuclease contamination from the tube is not an acceptable variable; lot traceability satisfies GMP process development documentation requirements\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eNatural \/ Bulk (HS4427B)\u003c\/th\u003e\n\u003cth\u003eNatural \/ Racked (HS4427R)\u003c\/th\u003e\n\u003cth\u003eNatural \/ Skirted (HS4427S)\u003c\/th\u003e\n\u003cth\u003eBlack \/ Bulk (HS4429)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHS4427B\u003c\/td\u003e\n\u003ctd\u003eHS4427R\u003c\/td\u003e\n\u003ctd\u003eHS4427S\u003c\/td\u003e\n\u003ctd\u003eHS4429\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003eHeathrow Scientific\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVolume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003e50 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003e114 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003e1.1 in (2.9 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGraduations\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003e5 mL intervals to 50 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax RCF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9,500 × g\u003c\/td\u003e\n\u003ctd\u003e9,500 × g\u003c\/td\u003e\n\u003ctd\u003e9,500 × g\u003c\/td\u003e\n\u003ctd\u003e9,400 × g\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003ctd\u003eBlack (opaque)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBottom Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003ctd\u003eSkirted (self-standing)\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCap\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003eFlat leak-proof polyethylene screw cap\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003eYes — gamma-irradiated, SAL 10⁻⁶\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterility Expiration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003e3 years from manufacture\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDNase\/RNase-Free\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003eYes — lot certified\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAutoclavable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"4\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackaging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBulk \/ 500\u003c\/td\u003e\n\u003ctd\u003eRacked (20 × 25pk) \/ 500\u003c\/td\u003e\n\u003ctd\u003eBulk \/ 500\u003c\/td\u003e\n\u003ctd\u003eBulk \/ 500\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003ctd\u003eTaiwan\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eLaboratory Applications\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc\"\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMammalian Cell Culture — Large-Volume Harvest \u0026amp; Wash (Natural Bulk or Racked)\u003c\/strong\u003e — spin suspension cultures and trypsinized adherent cells at 300–400 × g for pellet-wash-resuspension; the racked format eliminates tube juggling in the biosafety cabinet where both hands are needed for decanting and resuspension of large cell pellets\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eLentiviral \u0026amp; AAV Vector Production\u003c\/strong\u003e — clarify viral supernatants by low-speed centrifugation at 800–1,000 × g; DNase\/RNase-free certification protects encapsidated nucleic acid from tube-sourced nuclease degradation; lot traceability supports the documentation requirements of GMP-adjacent research manufacturing workflows\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eFlow Cytometry — Large-Volume PBMC Isolation \u0026amp; Staining (Black, HS4429)\u003c\/strong\u003e — Ficoll-density gradient PBMC separations, bone marrow processing, and tumor-infiltrating lymphocyte expansions involve 50 mL-scale fluorescent samples with long staining incubations; black tubes protect FITC, PE, APC, and tandem dye signal fidelity through the full 4°C incubation without foil wrapping\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eEnvironmental \u0026amp; Clinical Sample Collection (Skirted, HS4427S)\u003c\/strong\u003e — urine, bronchoalveolar lavage, and environmental water samples collected in 50 mL conicals benefit from skirted-base stability during sample addition, capping, and transport without a tube rack at point-of-collection or point-of-care settings\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMicrobial Culture Harvest \u0026amp; Protein Expression Recovery\u003c\/strong\u003e — pellet 50 mL bacterial cultures at 4,000–8,000 × g for protein expression harvest and plasmid prep; the conical geometry concentrates pellets at the tube tip for efficient minimal-volume resuspension\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eWhen should I choose the skirted bottom (HS4427S) over a standard conical bottom?\u003c\/strong\u003e\u003cbr\u003eChoose the skirted bottom when tubes need to stand upright without a rack — during field or clinical sample collection, during reagent additions in a biosafety cabinet where a rack takes up needed space, or in any workflow where hands-free tube stability matters between steps. The trade-off: skirted tubes may not fit all centrifuge rotors designed for standard conical-bottom 50 mL geometry. Verify your rotor's tube position specifications before using HS4427S in a swing-bucket or fixed-angle rotor not rated for flat-base tubes. For centrifuge use, HS4427B (bulk) or HS4427R (racked) are universally compatible with standard 50 mL rotor positions.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eWhat is the per-tube price difference across the four configurations?\u003c\/strong\u003e\u003cbr\u003eNatural bulk (HS4427B) is $216\/case\/500 — $0.43\/tube. Natural racked (HS4427R) is $231 — $0.46\/tube. Natural skirted (HS4427S) is $225 — $0.45\/tube. Black bulk (HS4429) is $337 — $0.67\/tube. The $15 per-case premium for racked or skirted is recovered in handling time within days in a high-throughput tissue culture workflow. The black tube premium reflects the additional cost of the opaque polypropylene formulation and Taiwan manufacturing specification.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eAre these tubes compatible with standard 50 mL conical centrifuge rotors?\u003c\/strong\u003e\u003cbr\u003eThe natural bulk (HS4427B), natural racked (HS4427R), and black bulk (HS4429) all have standard conical bottom profiles (29 mm outer diameter at base) compatible with 50 mL tube positions in Eppendorf, Thermo Fisher, Beckman Coulter, and Hettich rotors. The skirted variant (HS4427S) has a flat base flange — verify compatibility with your specific rotor model before centrifugation use.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCan I use these tubes in an ultracentrifuge?\u003c\/strong\u003e\u003cbr\u003eNo. The 9,400–9,500 × g maximum RCF rating applies to standard benchtop centrifuges. Ultracentrifugation operates at 100,000 × g and above — far beyond the structural limit of polypropylene 50 mL conical tubes from any manufacturer. Ultracentrifuge applications require purpose-rated tubes manufactured from thicker-wall polypropylene, polycarbonate, or PTFE in formats specific to ultracentrifuge rotor geometry.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eQuality Assurance\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eHeathrow Scientific 50 mL conical tubes are gamma-irradiated to a sterility assurance level of 10⁻⁶ with a 3-year sterility expiration from the date of manufacture. DNase\/RNase-free certification is documented per lot. The HS4427R racked format uses recyclable chipboard racks. The HS4429 black variant is manufactured in Taiwan to identical certification standards as the China-manufactured natural variants. All configurations comply with ISO general labware standards for polypropylene centrifuge tube geometry and performance.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eAcademic and Institutional Pricing\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eLabSupplies.com offers tiered quantity pricing for academic and research institutions. As an authorized dealer, we ship directly from USA inventory.\u003c\/p\u003e","brand":"Heathrow Scientific","offers":[{"title":"Natural \/ Bulk Wrap","offer_id":48074549690600,"sku":"HS4427B","price":216.0,"currency_code":"USD","in_stock":true},{"title":"Natural \/ Racked","offer_id":48074549723368,"sku":"HS4427R","price":231.0,"currency_code":"USD","in_stock":true},{"title":"Natural \/ Skirted \/ Self-Standing","offer_id":48074549756136,"sku":"HS4427S","price":225.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Bulk Wrap","offer_id":48074549788904,"sku":"HS4429","price":337.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/unnamed_91300b32-4143-4ee9-88e9-de9f28f0ff12.jpg?v=1771750646"},{"product_id":"conical-bottom-test-tubes-45ml-12-75mm-blue-ps-2142023b10e1","title":"4.5 mL Centrifuge Tubes, Conical Bottom, PS, Blue — 214-2023-B10 | 250\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e4.5 mL Conical Bottom Test Tubes, 12 × 75 mm — Polystyrene, Blue, 250\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese 4.5 mL polypropylene conical bottom test tubes measure 12 × 75 mm and are manufactured from optically clear polystyrene (PS) in blue for color-coded rack identification across multi-tube clinical workflows. Supplied non-sterile in sealed 250\/Bag packaging, part number 214-2023-B10 is designed for clinical hematology, urinalysis sediment analysis, toxicology sample preparation, centrifuge pelleting, and general laboratory use. The conical bottom geometry concentrates sample pellets at the tube tip after centrifugation, enabling complete aspirate recovery with minimal pellet disturbance.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e214-2023-B10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e4.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12 × 75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolystyrene (PS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e250\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClinical hematology: differential cell counts and conical pellet concentration after centrifugation\u003c\/li\u003e\n\u003cli\u003eUrinalysis sediment analysis: conical geometry collects sediment at the tube tip for easy resuspension and microscopic examination\u003c\/li\u003e\n\u003cli\u003eToxicology sample preparation: clean phase separation in aqueous and dilute-acid matrices\u003c\/li\u003e\n\u003cli\u003eCentrifuge pelleting of cells, precipitates, or particulates in standard 12 mm tube holders\u003c\/li\u003e\n\u003cli\u003eColor-coded rack organization in high-throughput clinical labs processing multiple sample pools simultaneously\u003c\/li\u003e\n\u003cli\u003eGeneral clinical laboratory workflows requiring a standard 12 × 75 mm format\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe 12 × 75 mm format seats securely in standard 12 mm clinical centrifuge tube holders and autoanalyzer sample racks designed for this footprint. Lot-to-lot dimensional consistency ensures reliable fit across automated analyzer rack systems throughout the procurement lifecycle. Verify tube dimensions against your specific centrifuge rotor or rack specification before substituting OEM supply.\u003c\/p\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater \/ aqueous buffers\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids (HCl, H₂SO₄)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases (NaOH \u0026lt;1 M)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSaline \/ physiological solutions\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlcohols (MeOH, EtOH)\u003c\/td\u003e\n\u003ctd\u003eFair — short-term contact only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetone \/ ketones\u003c\/td\u003e\n\u003ctd\u003ePoor — avoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrong oxidizers\u003c\/td\u003e\n\u003ctd\u003ePoor — avoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHydrocarbons \/ aromatic solvents\u003c\/td\u003e\n\u003ctd\u003ePoor — avoid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA at Caplugs® Evergreen ISO-certified manufacturing facilities using FDA-registered virgin-grade polystyrene resin. These tubes are BPA-free and phthalate-free, with lot-level quality controls ensuring consistent wall thickness, conical geometry, and length tolerance across all 250 tubes per bag. Sealed bag packaging maintains product integrity from warehouse receipt through point-of-use. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered volume pricing available for clinical labs, hospitals, and research institutions operating under CAP, CLIA, or ISO 15189 frameworks.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile, which is appropriate for the majority of clinical chemistry, hematology, urinalysis, and toxicology prep workflows where sterility is not required. If your protocol requires sterile tubes, please contact us to discuss options.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill these tubes fit my centrifuge and autoanalyzer racks?\u003c\/strong\u003e\u003cbr\u003eThe 12 × 75 mm format is compatible with standard 12 mm clinical centrifuge tube holders and autoanalyzer sample racks built for this footprint. Always verify the tube dimensions against your specific rotor or rack specification before placing a large procurement order.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy are the tubes blue, and how does that help in the lab?\u003c\/strong\u003e\u003cbr\u003eThe blue color provides immediate visual differentiation when multiple tube types or sample pools are processed simultaneously in high-throughput rack systems, reducing the risk of misidentification without requiring additional labeling steps.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan polystyrene tubes be autoclaved or used with organic solvents?\u003c\/strong\u003e\u003cbr\u003eNo — polystyrene is not autoclavable and is not resistant to acetone, alcohols above short-term contact, aromatic solvents, or strong oxidizers. These tubes are intended for aqueous clinical matrices, dilute acids, and dilute bases. For protocols requiring autoclavability or broad solvent resistance, polypropylene tubes would be the appropriate choice.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"4.5 mL Conical Bottom Test Tubes, 12 × 75 mm, Polystyrene, Blue, 250\/Bag — Caplugs® Evergreen 214-2023-B10\",\"sku\":\"2142023B10E1\",\"mpn\":\"214-2023-B10\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polystyrene (PS)\",\"color\":\"Blue\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"84.62\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile, which is appropriate for the majority of clinical chemistry, hematology, urinalysis, and toxicology prep workflows where sterility is not required.\"}},{\"@type\":\"Question\",\"name\":\"Will these tubes fit my centrifuge and autoanalyzer racks?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The 12 × 75 mm format is compatible with standard 12 mm clinical centrifuge tube holders and autoanalyzer sample racks built for this footprint. Always verify the tube dimensions against your specific rotor or rack specification before placing a large procurement order.\"}},{\"@type\":\"Question\",\"name\":\"Why are the tubes blue, and how does that help in the lab?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The blue color provides immediate visual differentiation when multiple tube types or sample pools are processed simultaneously in high-throughput rack systems, reducing the risk of misidentification without requiring additional labeling steps.\"}},{\"@type\":\"Question\",\"name\":\"Can polystyrene tubes be autoclaved or used with organic solvents?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — polystyrene is not autoclavable and is not resistant to acetone, alcohols above short-term contact, aromatic solvents, or strong oxidizers. These tubes are intended for aqueous clinical matrices, dilute acids, and dilute bases.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48552840757480,"sku":"2142023B10E1","price":84.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/214-2023-B10.png?v=1778690640"},{"product_id":"conical-bottom-test-tubes-4-5ml-12-75mm-natural-pp-2142355030e1","title":"4.5 mL Centrifuge Tubes, Conical Bottom, PP, Natural — 214-2355-030 | 250\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e4.5 mL Conical Bottom Centrifuge Tubes — PP, Natural, 12 × 75 mm (214-2355-030) | 250\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese 4.5 mL conical bottom test tubes measure 12 × 75 mm and are molded from virgin-grade polypropylene (PP) in a natural (translucent) finish, supplied non-sterile in sealed 250\/Bag packaging. The conical bottom geometry concentrates centrifuged pellets at the tube tip for complete aspirate recovery with minimal disturbance, making them well suited for clinical hematology, urinalysis sediment analysis, toxicology sample preparation, and general centrifuge pelleting workflows. Lot-to-lot dimensional consistency ensures reliable fit in standard 12 mm clinical centrifuge tube holders.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e214-2355-030\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e4.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12 × 75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural (translucent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e250\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClinical hematology — differential and cell-count sample preparation using conical pellet concentration\u003c\/li\u003e\n\u003cli\u003eUrinalysis — sediment analysis where the conical geometry ensures complete pellet collection after spin-down\u003c\/li\u003e\n\u003cli\u003eToxicology sample preparation — clean phase separation in aqueous and dilute reagent matrices\u003c\/li\u003e\n\u003cli\u003eGeneral centrifuge pelleting — any workflow requiring reliable pellet recovery in a standard 12 mm tube holder\u003c\/li\u003e\n\u003cli\u003eCAP-, CLIA-, and ISO 15189-regulated laboratories requiring lot-numbered, date-coded consumables for full traceability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic \/ chlorinated solvents\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen conical bottom tubes are produced at ISO-certified manufacturing facilities from virgin-grade, FDA 21 CFR Part 177–compliant polypropylene resin that is BPA-free and phthalate-free — suitable for direct contact with serum, plasma, urine, and standard clinical reagent matrices. Every bag carries a lot number and manufacturing date to support full audit trails in CAP-, CLIA-, and ISO 15189-regulated environments. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, with tiered pricing available for high-volume institutional, hospital, and reference laboratory accounts.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these centrifuge tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — the 214-2355-030 tubes are supplied non-sterile. For workflows requiring sterile consumables, a separate sterile-grade product should be selected.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat centrifuge tube holders or racks are these compatible with?\u003c\/strong\u003e\u003cbr\u003eThe 12 × 75 mm outer dimensions are compatible with standard 12 mm clinical centrifuge tube holders and matching 12 × 75 mm tube racks commonly found in hematology and urinalysis laboratories.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre these tubes autoclavable?\u003c\/strong\u003e\u003cbr\u003ePolypropylene has inherent autoclave tolerance; however, autoclaving is only advisable if your specific workflow requires it. Because these tubes are sold non-sterile and are intended for single use, autoclaving is not a standard recommended practice for this product.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat documentation is available for CAP or CLIA compliance?\u003c\/strong\u003e\u003cbr\u003eEach bag is lot-numbered and date-coded, providing the chain-of-custody documentation required for CAP, CLIA, and ISO 15189 laboratory audits. Contact LabSupplies.com for certificates of conformance or additional quality documentation.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"4.5 mL Conical Bottom Centrifuge Tubes, PP, Natural, 12 × 75 mm — 250\/Bag\",\"sku\":\"2142355030E1\",\"mpn\":\"214-2355-030\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene (PP)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"84.11\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these centrifuge tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — the tubes are supplied non-sterile. 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Contact LabSupplies.com for certificates of conformance or additional quality documentation.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48553004630248,"sku":"2142355030E1","price":84.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/214-2313-030_02.jpg?v=1778691954"},{"product_id":"conical-bottom-test-tubes-4-5ml-12-75mm-blue-pp-2142355b30e1","title":"4.5 mL Centrifuge Tubes, Conical Bottom, PP, Blue — 214-2355-B30 | 250\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e4.5 mL Conical Bottom Centrifuge Tubes — Polypropylene, Blue, 12 × 75 mm (214-2355-B30) | 250\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese 4.5 mL conical bottom centrifuge tubes measure 12 × 75 mm and are molded from virgin-grade polypropylene (PP) for reliable performance across clinical and research centrifugation workflows. Supplied non-sterile in sealed 250\/Bag packaging, they are well suited for hematology, toxicology sample preparation, urinalysis sediment analysis, and any application requiring efficient pellet concentration at the tube tip. The blue color provides at-a-glance rack identification in high-throughput laboratory settings.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e214-2355-B30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e4.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12 × 75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e250\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClinical hematology: differential cell counts and conical pellet concentration after centrifugation\u003c\/li\u003e\n\u003cli\u003eToxicology sample preparation: clean phase separation with minimal carry-over\u003c\/li\u003e\n\u003cli\u003eUrinalysis: sediment analysis using conical bottom geometry to concentrate cellular and particulate material\u003c\/li\u003e\n\u003cli\u003eGeneral centrifuge pelleting: complete aspirate recovery with minimal pellet disturbance\u003c\/li\u003e\n\u003cli\u003eColor-coded sample rack organization in high-throughput clinical and CAP\/CLIA\/ISO 15189-accredited laboratory workflows\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe 12 × 75 mm outer diameter of these tubes is compatible with standard 12 mm clinical centrifuge tube holders, making them a practical choice for laboratories already using this format. Lot-to-lot dimensional consistency—including controlled wall thickness, outer diameter, and length tolerances—ensures a reliable fit across centrifuge rotors and tube racks designed for the 12 mm format. Every bag ships with a lot number and manufacturing date to support full traceability in CAP-, CLIA-, and ISO 15189-accredited settings.\u003c\/p\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic \/ chlorinated solvents\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen tubes are produced at ISO-certified facilities from FDA-compliant, virgin-grade polypropylene that is BPA-free, phthalate-free, and latex-free. Sealed 250\/Bag packaging preserves product integrity from warehouse receipt through point of use, and each bag carries full lot and manufacturing date information for regulatory traceability. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from domestic USA inventory, with tiered volume pricing available for high-use clinical labs, hospitals, and research institutions.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these centrifuge tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile. For applications requiring sterility, confirm that your workflow includes a validated sterilization step or contact us about sterile packaging options.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat centrifuge rotor formats accept the 12 × 75 mm tube size?\u003c\/strong\u003e\u003cbr\u003eThe 12 × 75 mm outer diameter is compatible with standard 12 mm clinical centrifuge tube holders. Always verify rotor and tube holder specifications against your instrument's documentation before use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tubes safe for direct contact with serum, plasma, and urine?\u003c\/strong\u003e\u003cbr\u003eYes — they are molded from virgin-grade, FDA-compliant polypropylene that is BPA-free and phthalate-free, making them suitable for direct contact with serum, plasma, urine, and standard aqueous clinical reagent matrices.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these tubes be autoclaved?\u003c\/strong\u003e\u003cbr\u003ePolypropylene is generally autoclavable; however, these tubes are supplied non-sterile and are not validated for autoclave sterilization by the manufacturer. Consult your laboratory's SOP before autoclaving.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"4.5 mL Conical Bottom Centrifuge Tubes, Polypropylene, Blue, 12 × 75 mm — 250\/Bag\",\"sku\":\"2142355B30E1\",\"mpn\":\"214-2355-B30\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene (PP)\",\"color\":\"Blue\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"84.11\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these centrifuge tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile. 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Consult your laboratory's SOP before autoclaving.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48553005154536,"sku":"2142355B30E1","price":84.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/214-2355-B30_02.jpg?v=1778691955"},{"product_id":"conical-bottom-test-tubes-4-5ml-12-75mm-green-pp-2142355g30e1","title":"4.5 mL Centrifuge Tubes, Conical Bottom, PP, Green — 214-2355-G30 | 250\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e4.5 mL Conical Bottom Centrifuge Tubes — Polypropylene, Green, 250\/Bag (214-2355-G30)\u003c\/h2\u003e\n\u003cp\u003eThese 4.5 mL conical bottom tubes measure 12 × 75 mm and are molded from virgin-grade polypropylene (PP), making them well suited for clinical centrifugation, hematology differential work, and urinalysis sediment analysis. Supplied non-sterile in sealed 250\/Bag packaging, they offer consistent lot-to-lot dimensional tolerances that ensure reliable seating in standard 12 mm centrifuge tube holders. The green color provides immediate visual identification in color-coded sample racks, reducing handling errors in high-throughput clinical environments.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e214-2355-G30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e4.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12 × 75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eGreen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e250\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClinical hematology differential — conical geometry concentrates the cellular pellet at the tube tip for clean aspiration with minimal disturbance\u003c\/li\u003e\n\u003cli\u003eCentrifuge pelleting in 12 mm rotor positions for serum, plasma, and whole-blood samples\u003c\/li\u003e\n\u003cli\u003eToxicology sample preparation — conical bottom supports complete phase separation and pellet recovery\u003c\/li\u003e\n\u003cli\u003eUrinalysis sediment analysis — tight dimensional tolerances ensure consistent sediment concentration in the conical tip\u003c\/li\u003e\n\u003cli\u003eGeneral clinical bench work requiring color-coded, rack-compatible 12 × 75 mm tubes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic \/ chlorinated solvents\u003c\/td\u003e\n\u003ctd\u003eLimited — not recommended for prolonged contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen tubes are produced at ISO-certified facilities from FDA-compliant virgin-grade polypropylene that is BPA-free and phthalate-free. Each bag carries a lot number and manufacturing date to support full traceability under CAP, CLIA, and ISO 15189 quality programs. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered volume pricing available for clinical labs, hospitals, and research institutions placing recurring orders.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these centrifuge tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — part number 214-2355-G30 is supplied non-sterile in sealed 250\/Bag packaging. For applications requiring a sterile article, a separately listed sterile format should be selected.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat centrifuge rotor positions do these tubes fit?\u003c\/strong\u003e\u003cbr\u003eThe 12 × 75 mm outer dimensions are compatible with standard 12 mm clinical centrifuge tube holders. Always confirm that your specific rotor or rack accepts the 12 mm diameter before use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy is the tube green?\u003c\/strong\u003e\u003cbr\u003eGreen is used as a color-coding convention to help staff quickly identify the correct tube type in multi-analyte sample racks. This reduces misidentification errors in high-throughput clinical workflows without requiring any retraining.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these tubes be used with serum, plasma, and urine samples?\u003c\/strong\u003e\u003cbr\u003eYes — polypropylene is chemically compatible with serum, plasma, urine, and standard aqueous clinical reagent matrices. The virgin-grade, BPA-free, phthalate-free resin is appropriate for direct contact with these sample types.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"4.5 mL Conical Bottom Centrifuge Tubes, Polypropylene, Green, 250\/Bag — Caplugs® Evergreen 214-2355-G30\",\"sku\":\"2142355G30E1\",\"mpn\":\"214-2355-G30\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene (PP)\",\"color\":\"Green\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"84.11\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these centrifuge tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile in sealed 250\/Bag packaging. 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Always confirm that your specific rotor or rack accepts the 12 mm diameter before use.\"}},{\"@type\":\"Question\",\"name\":\"Why is the tube green?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Green is used as a color-coding convention to help staff quickly identify the correct tube type in multi-analyte sample racks, reducing misidentification errors in high-throughput clinical workflows.\"}},{\"@type\":\"Question\",\"name\":\"Can these tubes be used with serum, plasma, and urine samples?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — polypropylene is chemically compatible with serum, plasma, urine, and standard aqueous clinical reagent matrices. The virgin-grade, BPA-free, phthalate-free resin is appropriate for direct contact with these sample types.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48553005220072,"sku":"2142355G30E1","price":84.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/214-2355-G30.png?v=1778691957"},{"product_id":"conical-bottom-test-tubes-4-5ml-12-75mm-red-pp-2142355r30e1","title":"4.5 mL Centrifuge Tubes, Conical Bottom, PP, Red — 214-2355-R30 | 250\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e4.5 mL Conical Bottom Centrifuge Tubes, Polypropylene, Red — 250\/Bag (214-2355-R30)\u003c\/h2\u003e\n\u003cp\u003eThese 4.5 mL conical bottom tubes measure 12 × 75 mm and are molded from virgin-grade polypropylene (PP), making them well suited for clinical centrifugation, urinalysis sediment concentration, and toxicology sample preparation. Supplied non-sterile in sealed 250\/Bag packaging, the red color provides immediate rack-position identification in high-throughput laboratory workflows. Lot-to-lot dimensional consistency ensures reliable fit in standard 12 mm centrifuge tube holders, batch after batch.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e214-2355-R30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e4.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12 × 75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e250\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClinical hematology — differential cell counts and pellet concentration using the conical geometry to minimize pellet disturbance during aspiration\u003c\/li\u003e\n\u003cli\u003eUrinalysis sediment analysis — conical bottom consolidates cellular and particulate sediment at the tube tip for efficient microscopic examination\u003c\/li\u003e\n\u003cli\u003eToxicology sample preparation — clean phase separation in aqueous and dilute-reagent matrices\u003c\/li\u003e\n\u003cli\u003eGeneral centrifuge pelleting — compatible with standard 12 mm clinical centrifuge tube holders\u003c\/li\u003e\n\u003cli\u003eColor-coded rack organization — red coloring supports visual sample-type or workflow-stage identification in high-throughput settings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic \/ chlorinated solvents\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA from FDA-compliant, BPA-free, phthalate-free virgin-grade polypropylene, these tubes are produced at Caplugs® Evergreen ISO-certified manufacturing facilities with tight controls on wall thickness, outer diameter, and length tolerance. Each bag carries a lot number and manufacturing date to support full traceability under CAP, CLIA, and ISO 15189 quality programs. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, so labs avoid offshore lead-time variability and can depend on consistent domestic supply for high-volume clinical operations.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — the 214-2355-R30 tubes are supplied non-sterile. For applications requiring sterility, contact us about sterile alternatives in the Caplugs® Evergreen catalog.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill these tubes fit standard clinical centrifuge racks?\u003c\/strong\u003e\u003cbr\u003eYes. The 12 × 75 mm outer dimensions are compatible with standard 12 mm clinical centrifuge tube holders commonly found in hematology and urinalysis workflows.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre the tubes safe for direct contact with serum, plasma, and urine?\u003c\/strong\u003e\u003cbr\u003eYes. They are molded from virgin-grade polypropylene resin that is BPA-free and phthalate-free, making them appropriate for direct contact with serum, plasma, urine, and standard aqueous clinical matrices.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat lot traceability documentation is available?\u003c\/strong\u003e\u003cbr\u003eEach bag is labeled with a lot number and manufacturing date, providing the documentation needed for CAP, CLIA, and ISO 15189 accreditation recordkeeping.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"4.5 mL Conical Bottom Centrifuge Tubes, Polypropylene, Red — 250\/Bag\",\"sku\":\"2142355R30E1\",\"mpn\":\"214-2355-R30\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene (PP)\",\"color\":\"Red\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"84.11\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — the tubes are supplied non-sterile. 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They are molded from virgin-grade polypropylene resin that is BPA-free and phthalate-free, making them appropriate for direct contact with serum, plasma, urine, and standard aqueous clinical matrices.\"}},{\"@type\":\"Question\",\"name\":\"What lot traceability documentation is available?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Each bag is labeled with a lot number and manufacturing date, providing the documentation needed for CAP, CLIA, and ISO 15189 accreditation recordkeeping.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48553077145832,"sku":"2142355R30E1","price":84.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/214-2355-R30_02.jpg?v=1778692517"},{"product_id":"conical-microcentrifuge-tubes-1-5ml-yellow-ppc-2143410y80e1","title":"1.5 mL Microcentrifuge Tubes, Tethered Caps, PPC, Yellow — 214-3410-Y80 | 250\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e1.5 mL Conical Microcentrifuge Tubes with Tethered Cap — PPC, Yellow, 250\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese 1.5 mL conical microcentrifuge tubes feature a permanently attached tethered cap, molded graduation markings, and yellow polypropylene copolymer (PPC) construction — supplied non-sterile in 250\/Bag for high-throughput molecular biology, clinical, and research workflows. Polypropylene copolymer delivers enhanced flexibility and impact resistance compared to standard PP homopolymer, reducing the risk of cracking during high-speed centrifuge runs. Lot-to-lot dimensional consistency ensures reliable seating in standard 1.5 mL microcentrifuge rotor positions.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e214-3410-Y80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e1.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Style\u003c\/td\u003e\n\u003ctd\u003eTethered — permanently attached\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduation\u003c\/td\u003e\n\u003ctd\u003eMolded volume markings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e250\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePCR preparation and thermocycler-compatible microvolume setup\u003c\/li\u003e\n\u003cli\u003eDNA and RNA extraction with low dead-volume conical geometry\u003c\/li\u003e\n\u003cli\u003eEnzyme reactions and protein assay sample preparation\u003c\/li\u003e\n\u003cli\u003eCell pelleting during microcentrifuge-based culture workflows\u003c\/li\u003e\n\u003cli\u003eClinical microvolume sample processing in CAP\/CLIA-accredited environments requiring lot traceability\u003c\/li\u003e\n\u003cli\u003eColor-coded sample-type differentiation in multi-tube rack workflows\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (e.g., toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eLimited — not recommended for prolonged contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (e.g., chloroform)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen microcentrifuge tubes are manufactured from BPA-free, phthalate-free polypropylene copolymer resin. Each bag carries full lot-level documentation to support quality systems in CAP-, CLIA-, and ISO 15189-accredited laboratories. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered pricing available for high-volume institutional and grant-funded purchasing programs.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these microcentrifuge tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — the 214-3410-Y80 tubes are supplied non-sterile in sealed 250\/Bag packaging. For applications requiring sterility, pre-sterilization by the end user or selection of a sterile-certified product is recommended.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of a tethered cap versus a separate snap cap?\u003c\/strong\u003e\u003cbr\u003eThe permanently attached hinge eliminates cap loss during high-throughput pipetting and reduces cross-contamination risk. Single-handed opening and closing also improves throughput in repetitive microvolume workflows.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy choose polypropylene copolymer (PPC) over standard polypropylene homopolymer?\u003c\/strong\u003e\u003cbr\u003ePPC offers greater flexibility and impact resistance than standard PP homopolymer, which lowers the risk of tube cracking or hinge fatigue during high-speed microcentrifuge runs and in cold-temperature storage conditions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill these tubes fit standard microcentrifuge rotors?\u003c\/strong\u003e\u003cbr\u003eYes — the 1.5 mL conical format is dimensionally consistent with standard microcentrifuge rotor positions. Lot-to-lot manufacturing controls maintain uniform geometry and wall thickness across every bag.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"1.5 mL Conical Microcentrifuge Tubes with Tethered Cap, PPC, Yellow, 250\/Bag\",\"sku\":\"2143410Y80E1\",\"mpn\":\"214-3410-Y80\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Yellow\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"16.97\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these microcentrifuge tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — the tubes are supplied non-sterile in sealed 250\/Bag packaging. 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Constructed from polypropylene copolymer (PPC), the tubes offer enhanced flexibility and impact resistance compared to standard PP homopolymer, reducing the risk of cracking during high-speed centrifuge runs. Supplied non-sterile in sealed 1000\/Bag packaging, part number 214-3425-080 delivers lot-to-lot dimensional consistency for reliable fit in standard 0.5 mL microcentrifuge rotor positions.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e214-3425-080\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e0.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Style\u003c\/td\u003e\n\u003ctd\u003eTethered (permanently attached)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduation\u003c\/td\u003e\n\u003ctd\u003eMolded volume markings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e1000\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePCR and qPCR reaction setup requiring precise microvolume handling\u003c\/li\u003e\n\u003cli\u003eDNA and RNA extraction with minimal dead-volume loss in a conical format\u003c\/li\u003e\n\u003cli\u003eEnzyme incubation and kinetics assays at the 0.5 mL scale\u003c\/li\u003e\n\u003cli\u003eCell and protein pelleting in benchtop microcentrifuge workflows\u003c\/li\u003e\n\u003cli\u003eClinical and CLIA laboratory microvolume sample processing where lot traceability is required\u003c\/li\u003e\n\u003cli\u003eHigh-throughput pipetting workflows where the tethered cap eliminates cap loss and reduces cross-contamination risk\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol \/ isopropanol \/ ethanol\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA under ISO 9001 quality management, these Caplugs® Evergreen tubes are manufactured from BPA-free, phthalate-free polypropylene copolymer resin, ensuring compliance with modern laboratory safety standards. 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If your protocol requires sterile tubes, look for a DNase\/RNase-free or sterile-designated product.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of a tethered cap over a separate snap cap?\u003c\/strong\u003e\u003cbr\u003eThe tethered cap is permanently attached via a flexible hinge, so it cannot be misplaced or mixed up between tubes during high-throughput pipetting. 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They are intended for standard molecular biology, research, and clinical workflows that do not require a sterility guarantee. If your protocol requires sterile tubes, look for a DNase\/RNase-free or sterile-designated product.\"}},{\"@type\":\"Question\",\"name\":\"What is the advantage of a tethered cap over a separate snap cap?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The tethered cap is permanently attached via a flexible hinge, so it cannot be misplaced or mixed up between tubes during high-throughput pipetting. Single-handed opening and closing also reduces workflow interruption and lowers the risk of cross-contamination in repetitive microvolume processing.\"}},{\"@type\":\"Question\",\"name\":\"Why use polypropylene copolymer (PPC) instead of standard polypropylene?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"PPC offers greater flexibility and impact resistance than standard PP homopolymer, which reduces cracking during high-speed microcentrifuge runs — a meaningful advantage when working with precious or limited samples.\"}},{\"@type\":\"Question\",\"name\":\"Are the volume graduations permanent and reagent-resistant?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — the graduation markings are molded directly into the PPC tube wall rather than printed on, so they will not wash off or fade when exposed to aqueous buffers, dilute acids or bases, or standard molecular biology reagents.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48553127936232,"sku":"2143425080E1","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/214-3425-080_01.jpg?v=1778693105"},{"product_id":"conical-microcentrifuge-tubes-0-5ml-amber-ppc-2143425n80e1","title":"0.5 mL Microcentrifuge Tubes, Tethered Caps, PPC, Amber — 214-3425-N80 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e0.5 mL Amber Microcentrifuge Tubes with Tethered Cap — Conical, PPC, Graduated, 1000\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese 0.5 mL conical microcentrifuge tubes feature a permanently attached tethered cap and are molded from amber Polypropylene Copolymer (PPC) — a material that offers enhanced flexibility and impact resistance compared with standard PP homopolymer, reducing cracking risk during high-speed centrifuge runs. Graduated volume markings are molded directly into the tube wall for solvent-resistant, permanent volume estimation at a glance. Supplied non-sterile in sealed 1000\/Bag packaging, part number 214-3425-N80 is designed for demanding molecular biology, clinical, and research microvolume workflows where cap security and light protection matter.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e214-3425-N80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e0.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Style\u003c\/td\u003e\n\u003ctd\u003eTethered (permanently attached)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduation\u003c\/td\u003e\n\u003ctd\u003eMolded volume markings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eAmber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e1000\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePCR and qPCR reaction setup requiring precise microvolume handling in the 0.5 mL range\u003c\/li\u003e\n\u003cli\u003eDNA and RNA extraction — conical geometry minimizes dead volume during low-elution workflows\u003c\/li\u003e\n\u003cli\u003eEnzyme reactions, restriction digests, and ligation setups\u003c\/li\u003e\n\u003cli\u003eCell and nuclei pelleting in standard microcentrifuge rotors\u003c\/li\u003e\n\u003cli\u003eLight-sensitive sample storage where amber construction reduces photodegradation\u003c\/li\u003e\n\u003cli\u003eClinical and CLIA laboratory microvolume processing with lot-traceable consumables\u003c\/li\u003e\n\u003cli\u003eHigh-throughput pipetting workflows where the tethered cap prevents cap loss and cross-contamination\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eNot recommended — limited resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen microcentrifuge tubes are produced from BPA-free, phthalate-free Polypropylene Copolymer resin with lot-level quality controls that ensure consistent geometry, wall thickness, and tethered cap hinge durability across every tube in the bag. Sealed 1000\/Bag packaging preserves product integrity from warehouse receipt through point-of-use and supports lot traceability for CAP, CLIA, and ISO 15189 accredited laboratories. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered volume pricing available for high-use clinical, research, and biotech accounts.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these microcentrifuge tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile. For applications requiring sterile consumables, such as tissue culture or certain clinical assays, sterile-packaged alternatives should be selected. Non-sterile tubes are appropriate for the vast majority of molecular biology and routine research workflows.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy is the cap tethered rather than separate?\u003c\/strong\u003e\u003cbr\u003eThe tethered cap is permanently attached via a flexible hinge, which eliminates the risk of cap loss and prevents mix-ups between caps and tubes during high-throughput pipetting sessions. Single-handed opening and closing also reduces repetitive motion interruptions on the bench.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of PPC over standard polypropylene?\u003c\/strong\u003e\u003cbr\u003ePolypropylene Copolymer (PPC) offers greater flexibility and impact resistance than standard PP homopolymer. This reduces the likelihood of stress cracking during high-speed microcentrifuge runs and makes the tubes more durable in cold-storage and freeze-thaw cycling applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy choose amber-colored tubes instead of natural or clear?\u003c\/strong\u003e\u003cbr\u003eThe amber pigmentation blocks a significant portion of visible and ultraviolet light, helping to protect light-sensitive samples — such as fluorescent dye conjugates, RNA, and photodegradable reagents — during bench processing and short-term storage. The color also provides an easy visual cue for differentiating sample types in multi-tube rack workflows.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"0.5 mL Amber Microcentrifuge Tubes with Tethered Cap — Conical, PPC, Graduated, 1000\/Bag\",\"sku\":\"2143425N80E1\",\"mpn\":\"214-3425-N80\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Amber\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"59.99\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these microcentrifuge tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile. For applications requiring sterile consumables, sterile-packaged alternatives should be selected. Non-sterile tubes are appropriate for the vast majority of molecular biology and routine research workflows.\"}},{\"@type\":\"Question\",\"name\":\"Why is the cap tethered rather than separate?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The tethered cap is permanently attached via a flexible hinge, which eliminates the risk of cap loss and prevents mix-ups between caps and tubes during high-throughput pipetting sessions. Single-handed opening and closing also reduces repetitive motion interruptions on the bench.\"}},{\"@type\":\"Question\",\"name\":\"What is the advantage of PPC over standard polypropylene?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Polypropylene Copolymer (PPC) offers greater flexibility and impact resistance than standard PP homopolymer. 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Constructed from polypropylene copolymer (PPC), which offers enhanced flexibility and impact resistance compared to standard PP homopolymer, the tubes resist cracking during high-speed centrifuge runs. Supplied non-sterile in sealed 1000\/Bag packaging, part number 214-3425-R80 delivers lot-to-lot dimensional consistency for reliable rotor fit across standard microcentrifuge platforms.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e214-3425-R80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e0.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Style\u003c\/td\u003e\n\u003ctd\u003eTethered (permanently attached)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduation\u003c\/td\u003e\n\u003ctd\u003eMolded volume markings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e1000\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePCR and enzyme reaction setup requiring precise microvolume containment\u003c\/li\u003e\n\u003cli\u003eDNA and RNA extraction workflows benefiting from low dead-volume conical geometry for complete pellet recovery\u003c\/li\u003e\n\u003cli\u003eCell pelleting and microvolume sample centrifugation at high speeds\u003c\/li\u003e\n\u003cli\u003eClinical and diagnostic labs processing small-volume specimens with lot-traceable consumables\u003c\/li\u003e\n\u003cli\u003eMulti-tube rack workflows where red color coding enables fast visual identification and sample-type differentiation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol \/ isopropanol \/ ethanol\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic \/ chlorinated solvents\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen microcentrifuge tubes are manufactured from BPA-free, phthalate-free polypropylene copolymer resin with lot-level quality controls that verify consistent conical geometry, wall thickness, and tethered cap hinge durability across every bag of 1000 tubes. LabSupplies.com is an authorized dealer shipping from USA inventory, with tiered volume pricing available for high-throughput clinical, research, and institutional procurement teams.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these microcentrifuge tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile in sealed 1000\/Bag packaging, which is appropriate for the vast majority of molecular biology, biochemistry, and general clinical workflows. If your protocol requires sterile tubes, please contact us for alternative options.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of polypropylene copolymer (PPC) over standard polypropylene?\u003c\/strong\u003e\u003cbr\u003ePPC offers greater flexibility and impact resistance than standard PP homopolymer, which reduces the risk of cracking or shattering during high-speed microcentrifuge runs — a meaningful benefit when processing irreplaceable samples.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill the tethered cap stay securely closed during centrifugation?\u003c\/strong\u003e\u003cbr\u003eThe cap is permanently attached via a flexible hinge and is designed to close securely for microcentrifuge use. As with any tethered-cap tube, verify your specific rotor and speed requirements against the tube's rated performance before running critical samples.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy are the tubes red, and does color affect performance?\u003c\/strong\u003e\u003cbr\u003eThe red color facilitates rapid visual tube identification and sample-type differentiation in multi-tube rack workflows — particularly useful in high-throughput labs running parallel assays. The color is integral to the PPC material and does not affect chemical compatibility or optical clarity for visual volume estimation via the molded graduation markings.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"0.5 mL Conical Microcentrifuge Tubes with Tethered Cap, PPC, Red, 1000\/Bag — Caplugs® Evergreen 214-3425-R80\",\"sku\":\"2143425R80E1\",\"mpn\":\"214-3425-R80\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Red\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"59.99\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these microcentrifuge tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile in sealed 1000\/Bag packaging, which is appropriate for the vast majority of molecular biology, biochemistry, and general clinical workflows.\"}},{\"@type\":\"Question\",\"name\":\"What is the advantage of polypropylene copolymer (PPC) over standard polypropylene?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"PPC offers greater flexibility and impact resistance than standard PP homopolymer, which reduces the risk of cracking or shattering during high-speed microcentrifuge runs.\"}},{\"@type\":\"Question\",\"name\":\"Will the tethered cap stay securely closed during centrifugation?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The cap is permanently attached via a flexible hinge and is designed to close securely for microcentrifuge use. Verify your specific rotor and speed requirements against the tube's rated performance before running critical samples.\"}},{\"@type\":\"Question\",\"name\":\"Why are the tubes red, and does color affect performance?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The red color facilitates rapid visual tube identification and sample-type differentiation in multi-tube rack workflows. The color is integral to the PPC material and does not affect chemical compatibility or optical clarity for visual volume estimation via the molded graduation markings.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48553138716904,"sku":"2143425R80E1","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/214-3425-R80_01.jpg?v=1778693260"},{"product_id":"conical-microcentrifuge-tubes-0-5ml-yellow-ppc-2143425y80e1","title":"0.5 mL Microcentrifuge Tubes, Tethered Caps, PPC, Yellow — 214-3425-Y80 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e0.5 mL Conical Microcentrifuge Tubes with Tethered Cap — PPC, Yellow, 1000\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese 0.5 mL conical microcentrifuge tubes feature a permanently attached tethered cap, molded graduation markings, and yellow polypropylene copolymer (PPC) construction — supplied non-sterile in 1000\/Bag packaging for high-throughput bench and clinical workflows. PPC construction delivers greater flexibility and impact resistance than standard PP homopolymer, reducing the risk of cracking during high-speed centrifuge runs. The conical bottom geometry concentrates pellets at the tip for complete microvolume recovery with minimal dead volume, making part number 214-3425-Y80 well suited for molecular biology, clinical chemistry, and sample archiving applications.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e214-3425-Y80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e0.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Style\u003c\/td\u003e\n\u003ctd\u003eTethered (permanently attached)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduation\u003c\/td\u003e\n\u003ctd\u003eMolded volume markings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e1000\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePCR setup and enzyme reaction staging requiring precise microvolume handling\u003c\/li\u003e\n\u003cli\u003eDNA and RNA extraction with complete pellet recovery from the conical tip\u003c\/li\u003e\n\u003cli\u003eCell pelleting and wash steps in tissue culture and cytology workflows\u003c\/li\u003e\n\u003cli\u003eClinical microvolume sample processing where lot traceability supports CAP\/CLIA compliance\u003c\/li\u003e\n\u003cli\u003eColor-coded sample organization in multi-tube microcentrifuge rack systems — yellow enables rapid visual differentiation by sample type or processing stage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol \/ isopropanol \/ ethanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic \/ chlorinated solvents\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen microcentrifuge tubes are manufactured from BPA-free, phthalate-free PPC resin with lot-level quality controls that verify consistent conical geometry, wall thickness, and tethered cap hinge durability across every 1000-tube bag. Sealed bag packaging maintains product integrity from warehouse receipt through point-of-use, and lot traceability supports the documentation requirements of CAP-, CLIA-, and ISO 15189-accredited laboratories. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered volume pricing available for institutional and grant-funded labs.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these microcentrifuge tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile in 1000\/Bag packaging. For applications requiring sterility, consider DNase\/RNase-free or sterile options; these tubes are intended for standard molecular biology and clinical chemistry workflows where sterility is not a requirement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of PPC over standard polypropylene for microcentrifuge tubes?\u003c\/strong\u003e\u003cbr\u003ePolypropylene copolymer (PPC) has greater flexibility and impact resistance than standard PP homopolymer. This reduces the risk of tube cracking or shattering during high-speed microcentrifuge runs, which is especially important when processing small, irreplaceable samples.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes the tethered cap stay attached during centrifugation?\u003c\/strong\u003e\u003cbr\u003eYes — the cap is permanently attached via a flexible hinge and is designed to remain closed and secure during centrifuge runs. The tethered design also eliminates cap loss during high-throughput pipetting and reduces the risk of mix-ups or cross-contamination between open tubes on the bench.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy are these tubes yellow, and are other colors available?\u003c\/strong\u003e\u003cbr\u003eThe yellow color of part number 214-3425-Y80 enables rapid visual identification and sample-type differentiation when multiple tube types are in use simultaneously on a rack or in a rotor. LabSupplies.com carries additional Caplugs® Evergreen microcentrifuge tube colors and configurations — contact us or browse the catalog for current options.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"0.5 mL Conical Microcentrifuge Tubes with Tethered Cap, PPC, Yellow, 1000\/Bag\",\"sku\":\"2143425Y80E1\",\"mpn\":\"214-3425-Y80\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Yellow\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"59.99\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these microcentrifuge tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile in 1000\/Bag packaging. 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The conical bottom geometry concentrates pellets at the tube tip for complete microvolume recovery with minimal dead volume, while the tethered cap eliminates cap loss and cross-contamination risk during high-throughput pipetting. 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Lot-level quality controls verify consistent conical geometry, wall thickness, and tethered-cap hinge durability across every 1000-tube bag. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from domestic USA inventory, so procurement teams avoid the offshore lead-time variability that can disrupt lab operations. 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Supplied non-sterile in sealed 250\/Bag packaging, the conical bottom geometry minimizes dead volume during pelleting and extraction steps. Manufactured under lot-to-lot dimensional controls, part number 214-3442-B80 delivers consistent fit in standard microcentrifuge rotor positions run after run.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e214-3442-B80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e2.0 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Style\u003c\/td\u003e\n\u003ctd\u003eTethered flat-top\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduations\u003c\/td\u003e\n\u003ctd\u003eMolded volume markings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e250\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePCR preparation and enzyme reaction setup requiring precise microvolume handling\u003c\/li\u003e\n\u003cli\u003eDNA and RNA extraction workflows where a low dead-volume conical bottom maximizes nucleic acid recovery\u003c\/li\u003e\n\u003cli\u003eCell pelleting and microcentrifuge-based separation protocols\u003c\/li\u003e\n\u003cli\u003eClinical microvolume sample processing in CAP- and CLIA-regulated laboratories requiring clear lot traceability\u003c\/li\u003e\n\u003cli\u003eHigh-throughput pipetting workflows where single-handed cap operation and tethered design prevent cap loss and cross-contamination\u003c\/li\u003e\n\u003cli\u003eHigh-density tube storage — the flat cap profile allows stable stacking\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (toluene, xylene, etc.)\u003c\/td\u003e\n\u003ctd\u003eNot recommended — verify before use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen microcentrifuge tubes are produced from BPA-free, phthalate-free polypropylene copolymer resin. PPC construction provides greater flexibility and impact resistance compared with standard PP homopolymer, reducing cracking risk during high-speed centrifuge runs. Sealed 250\/Bag packaging maintains product integrity from warehouse receipt through point-of-use, and lot-to-lot consistency supports traceability requirements in ISO 15189, CAP, and CLIA environments. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with volume pricing available for institutional and grant-funded laboratories.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these microcentrifuge tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile. For applications requiring sterility, downstream sterilization methods compatible with polypropylene (such as gamma irradiation) should be evaluated for your specific protocol.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of polypropylene copolymer (PPC) over standard polypropylene?\u003c\/strong\u003e\u003cbr\u003ePPC incorporates a comonomer that increases chain flexibility, giving the tubes greater impact resistance and reduced brittleness during high-speed centrifuge runs compared with standard PP homopolymer — an important consideration when spinning at maximum rotor speeds.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I write directly on the cap without a label?\u003c\/strong\u003e\u003cbr\u003eYes. The flat-top cap geometry provides a stable, smooth writing surface compatible with standard laboratory markers, which supports direct sample labeling and traceability without adhesive labels that can detach during centrifugation or freezer storage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill the tethered cap stay secure during centrifugation?\u003c\/strong\u003e\u003cbr\u003eThe cap is permanently attached via a flexible hinge rather than being a separate loose component, which eliminates cap loss during high-throughput pipetting. For specific centrifuge speed and rotor compatibility, consult your rotor manufacturer's guidelines for capped 2.0 mL microtubes.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"2.0 mL Conical Microcentrifuge Tubes, Tethered Flat-Top Cap, PPC, Blue — 250\/Bag\",\"sku\":\"2143442B80E1\",\"mpn\":\"214-3442-B80\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Blue\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"33.18\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these microcentrifuge tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile. For applications requiring sterility, downstream sterilization methods compatible with polypropylene (such as gamma irradiation) should be evaluated for your specific protocol.\"}},{\"@type\":\"Question\",\"name\":\"What is the advantage of polypropylene copolymer (PPC) over standard polypropylene?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"PPC incorporates a comonomer that increases chain flexibility, giving the tubes greater impact resistance and reduced brittleness during high-speed centrifuge runs compared with standard PP homopolymer — an important consideration when spinning at maximum rotor speeds.\"}},{\"@type\":\"Question\",\"name\":\"Can I write directly on the cap without a label?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. 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PPC construction provides greater flexibility and impact resistance than standard PP homopolymer, reducing the risk of cracking during high-speed centrifuge runs. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, with tiered pricing available for institutional, hospital, and grant-funded laboratories purchasing in volume.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these microcentrifuge tubes autoclavable?\u003c\/strong\u003e\u003cbr\u003ePolypropylene copolymer (PPC) is generally autoclavable, but Caplugs® Evergreen has not published an explicit autoclave rating for this product. 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If sterility is required, contact LabSupplies.com to confirm before autoclaving or consider a certified sterile alternative.\"}},{\"@type\":\"Question\",\"name\":\"Why choose amber tubes over clear for everyday microcentrifuge work?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The amber wall filters visible and UV light, protecting light-sensitive samples such as fluorescent dyes, certain nucleotides, and photolabile reagents from degradation during storage and benchtop handling — without requiring foil wrapping.\"}},{\"@type\":\"Question\",\"name\":\"Does the tethered cap affect centrifuge balance or rotor fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The flat-top tethered cap is designed to the same outer profile as standard 2.0 mL microcentrifuge tubes and seats normally in standard rotor positions. The flexible hinge remains folded flat against the tube body during a run, so it does not create an imbalance or clearance issue in typical fixed-angle and swing-bucket rotors.\"}},{\"@type\":\"Question\",\"name\":\"Can I write directly on the cap without a label printer?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — the flat cap geometry provides a stable, smooth writing surface compatible with standard laboratory markers, allowing quick handwritten identification without adhesive labels that may peel during freezing or centrifugation.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48553233613032,"sku":"2143442N80E1","price":33.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/214-3442-N80_01.jpg?v=1778694434"},{"product_id":"conical-flat-microcentrifuge-tubes-2-0ml-yellow-ppc-2143442y80e1","title":"2.0 mL Microcentrifuge Tubes, Tethered Caps, PPC, Yellow — 214-3442-Y80 | 250\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e2.0 mL Conical Flat Microcentrifuge Tubes with Tethered Cap — PPC, Yellow, 250\/Bag (214-3442-Y80)\u003c\/h2\u003e\n\u003cp\u003eThese 2.0 mL polypropylene copolymer (PPC) microcentrifuge tubes feature a permanently tethered flat-top cap, molded volume graduations, and a yellow color for fast visual identification in multi-tube workflows. Supplied non-sterile in 250\/Bag packaging, they are engineered for standard 2.0 mL microcentrifuge rotor positions and deliver the impact resistance and flexibility of PPC construction — reducing cracking risk during high-speed centrifuge runs compared with standard PP homopolymer. The manufacturer part number 214-3442-Y80 can be used when ordering to confirm the exact configuration.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e214-3442-Y80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e2.0 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Style\u003c\/td\u003e\n\u003ctd\u003eTethered flat-top\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduation\u003c\/td\u003e\n\u003ctd\u003eMolded volume markings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e250\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePCR setup and enzyme reaction preparation requiring a secure, leak-resistant closure\u003c\/li\u003e\n\u003cli\u003eDNA and RNA extraction workflows benefiting from the low dead-volume conical bottom\u003c\/li\u003e\n\u003cli\u003eCell pelleting and microvolume sample collection in clinical and research centrifuge runs\u003c\/li\u003e\n\u003cli\u003eHigh-throughput pipetting workflows where single-handed cap operation and no-cap-loss design reduce interruption\u003c\/li\u003e\n\u003cli\u003eClinical microvolume sample processing with flat-cap labeling for direct marker identification and lot traceability\u003c\/li\u003e\n\u003cli\u003eHigh-density tube storage using the stable flat-cap stacking geometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eNot recommended — verify before use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen microcentrifuge tubes are manufactured from BPA-free, phthalate-free polypropylene copolymer resin with lot-to-lot dimensional consistency for reliable rotor fit. The sealed 250\/Bag format maintains product integrity from warehouse receipt through point-of-use, supporting traceability requirements in CAP-, CLIA-, and ISO 15189-regulated laboratory environments. LabSupplies.com is an authorized Caplugs® Evergreen dealer, shipping from USA inventory with tiered volume pricing available for institutional purchasers, core facilities, and grant-funded laboratories.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these microcentrifuge tubes autoclavable?\u003c\/strong\u003e\u003cbr\u003eThe polypropylene copolymer (PPC) material is generally autoclavable; however, the tethered cap hinge should be evaluated for your specific cycle parameters. Because these tubes are supplied non-sterile, many labs autoclave them in-house prior to RNA or sensitive PCR work. 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The flat geometry also allows tubes to be stacked top-to-top in storage racks, making the labeling visible without removing the tube from the rack.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does yellow color coding help in multi-tube workflows?\u003c\/strong\u003e\u003cbr\u003eYellow provides immediate visual contrast against common white, natural, or blue tubes in a shared microcentrifuge rack. Assigning yellow to a specific sample type, extraction step, or reagent set lets technicians confirm tube identity at a glance and reduces the risk of processing errors during high-density runs.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"2.0 mL Conical Flat Microcentrifuge Tubes with Tethered Cap, PPC, Yellow, 250\/Bag — Caplugs® Evergreen 214-3442-Y80\",\"sku\":\"2143442Y80E1\",\"mpn\":\"214-3442-Y80\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Yellow\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"33.18\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these microcentrifuge tubes autoclavable?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The polypropylene copolymer (PPC) material is generally autoclavable; however, the tethered cap hinge should be evaluated for your specific cycle parameters. 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Supplied non-sterile in sealed 1000\/Bag packaging, part number 214-3710-010 features a conical bottom that concentrates pellets at the tip for complete sample recovery with minimal dead volume. Lot-to-lot dimensional consistency ensures reliable fit across standard microcentrifuge rotor positions.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e214-3710-010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e1.0 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Style\u003c\/td\u003e\n\u003ctd\u003eSnap Cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolystyrene (PS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e1000\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePCR setup and enzyme reaction preparation requiring microvolume precision\u003c\/li\u003e\n\u003cli\u003eDNA and RNA extraction with low dead-volume pellet recovery\u003c\/li\u003e\n\u003cli\u003eProtein precipitation and microvolume sample concentration\u003c\/li\u003e\n\u003cli\u003eCell pelleting in standard benchtop microcentrifuge rotors\u003c\/li\u003e\n\u003cli\u003eClinical serum and plasma microvolume sample processing in CAP, CLIA, and ISO 15189 environments\u003c\/li\u003e\n\u003cli\u003eVisual sample inspection workflows benefiting from the optical clarity of polystyrene\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eCompatible — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eUse with caution — limited compatibility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthyl acetate\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic \/ chlorinated solvents\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen microcentrifuge tubes are produced from BPA-free, phthalate-free virgin-grade polystyrene meeting FDA 21 CFR Part 177 standards, under ISO-certified dimensional controls that guarantee consistent wall thickness and rotor fit across every tube in the bag. Each bag of 214-3710-010 is lot-numbered and date-coded to support full traceability under CAP, CLIA, and ISO 15189 laboratory quality programs. LabSupplies.com is an authorized Caplugs® Evergreen dealer stocking this item in USA inventory, enabling same-business-day fulfillment and eliminating offshore lead-time risk for hospital molecular labs and high-throughput clinical processing facilities. Tiered pricing is available for institutional and grant-funded purchasers.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these microcentrifuge tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile. 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For most molecular biology, clinical chemistry, and sample-storage applications this is appropriate; if your protocol requires sterile tubes, please contact us for sterile alternatives.\"}},{\"@type\":\"Question\",\"name\":\"Why is polystyrene used instead of polypropylene for these tubes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Polystyrene offers superior optical clarity for visual inspection of sample color and pellet formation, along with low protein-binding characteristics that benefit serum and plasma workflows. If your protocol involves acetone, chlorinated solvents, or autoclaving, polypropylene tubes would be the better choice, as PS is not autoclavable and has limited solvent resistance.\"}},{\"@type\":\"Question\",\"name\":\"Are the tubes suitable for high-speed microcentrifugation?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The conical PS construction provides rigid wall performance during standard benchtop centrifugation. Always verify the maximum RCF rating for your specific rotor and confirm compatibility with your centrifuge manufacturer's guidelines before running at high speeds.\"}},{\"@type\":\"Question\",\"name\":\"Does each bag include lot and date information for regulatory traceability?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — every 1000\/Bag is lot-numbered and date-coded at the time of manufacture, supporting documentation requirements for CAP-accredited, CLIA-certified, and ISO 15189 laboratories.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48554761715944,"sku":"2143710010E1","price":53.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/214-3710-010_01.jpg?v=1778707624"},{"product_id":"conical-microcentrifuge-tubes-1-8ml-natural-pp-2143718030e1","title":"Conical Microcentrifuge Tubes, 1.8 mL, Polypropylene (PP), Natural, 1000\/Bag | Caplugs® Evergreen","description":"\u003ch1\u003eCaplugs® Evergreen 1.8 mL Conical Microcentrifuge Tubes, Polypropylene (PP), Natural, Non-Sterile, 1000\/Bag\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eCaplugs® Evergreen 1.8 mL Conical Microcentrifuge Tubes\u003c\/strong\u003e are molded from natural polypropylene for high-throughput sample handling, aliquoting, and short-term specimen storage. Their conical bottom drives complete pellet recovery after centrifugation, while the translucent resin lets bench scientists verify fill levels and phase separation at a glance.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eConical Microcentrifuge Tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVolume\/Size\u003c\/th\u003e\n\u003ctd\u003e1.8 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBottom Geometry\u003c\/th\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSterility\u003c\/th\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Size\u003c\/th\u003e\n\u003ctd\u003e1000\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePelleting cells, beads, and precipitates by microcentrifugation\u003c\/li\u003e\n\u003cli\u003eAliquoting reagents, buffers, and master mixes for downstream assays\u003c\/li\u003e\n\u003cli\u003eShort-term storage of nucleic acid and protein extracts\u003c\/li\u003e\n\u003cli\u003eSample prep for PCR, electrophoresis, and chromatography workflows\u003c\/li\u003e\n\u003cli\u003eRoutine dilution and mixing steps at the bench\u003c\/li\u003e\n\u003cli\u003eBulk consumable supply for core labs and teaching settings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003ePurchase with confidence from labsupplies.com, an authorized Caplugs® Evergreen dealer shipping from US inventory. These tubes are Made in USA, and each bag carries lot numbers to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact our procurement team for volume quotes.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eAre these microcentrifuge tubes supplied sterile?\u003c\/h3\u003e\n\u003cp\u003eNo. These tubes ship non-sterile. Labs requiring sterile conditions can autoclave the polypropylene tubes prior to use following their validated cycle.\u003c\/p\u003e\n\u003ch3\u003eCan the polypropylene tubes be autoclaved?\u003c\/h3\u003e\n\u003cp\u003eYes. Polypropylene withstands standard autoclave cycles at 121°C, so the tubes can be steam-sterilized before sensitive applications.\u003c\/p\u003e\n\u003ch3\u003eWhat is the working volume of these tubes?\u003c\/h3\u003e\n\u003cp\u003eEach tube has a 1.8 mL capacity. Leave adequate headspace below the rim for capping, mixing, and centrifugation to prevent overflow.\u003c\/p\u003e\n\u003ch3\u003eHow are the tubes packaged?\u003c\/h3\u003e\n\u003cp\u003eThey are supplied 1000 tubes per bag. Each bag carries a lot number for inventory control and traceability across accredited workflows.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Caplugs® Evergreen 1.8 mL Conical Microcentrifuge Tubes, Polypropylene (PP), Natural, Non-Sterile, 1000\/Bag\",\n  \"sku\": \"214-3718-030\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Caplugs® Evergreen\"\n  },\n  \"material\": \"Polypropylene (PP)\",\n  \"countryOfOrigin\": \"USA\",\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"priceCurrency\": \"USD\",\n    \"price\": \"47.77\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"labsupplies.com\"\n    }\n  }\n}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these microcentrifuge tubes supplied sterile?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. These tubes ship non-sterile. 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These tubes are Made in USA, and bags carry lot numbers to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available for high-volume procurement — contact our team for a quote.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eAre these tubes sterile?\u003c\/h3\u003e\n\u003cp\u003eNo. These tubes are supplied non-sterile. For applications requiring sterility, validate an in-house sterilization method appropriate for polypropylene before use.\u003c\/p\u003e\n\u003ch3\u003eWhat does \"false-bottom\" mean for these tubes?\u003c\/h3\u003e\n\u003cp\u003eThe false-bottom geometry positions a tapered internal floor above the molded base, improving probe and pipette access while reducing residual dead volume during sample aspiration.\u003c\/p\u003e\n\u003ch3\u003eDo these tubes include caps?\u003c\/h3\u003e\n\u003cp\u003eThe neck is externally threaded to accept a compatible screw cap, but caps are not included in this pack. Order caps separately to match your closure and transport requirements.\u003c\/p\u003e\n\u003ch3\u003eCan these tubes be centrifuged?\u003c\/h3\u003e\n\u003cp\u003eThey tolerate low-speed centrifugation within the mechanical limits of polypropylene. Confirm your g-force does not exceed the resin's rated capacity for your tube format before spinning.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Caplugs® Evergreen 5.0 mL Threaded False-Bottom Sample Tubes, Polypropylene (PP), Natural, Non-Sterile, 500\/Bag\",\n  \"sku\": \"127-1988-030\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Caplugs® Evergreen\"\n  },\n  \"countryOfOrigin\": \"USA\",\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"priceCurrency\": \"USD\",\n    \"price\": \"129.62\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"labsupplies.com\"\n    }\n  }\n}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these tubes sterile?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. These tubes are supplied non-sterile. For applications requiring sterility, validate an in-house sterilization method appropriate for polypropylene before use.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does \\\"false-bottom\\\" mean for these tubes?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The false-bottom geometry positions a tapered internal floor above the molded base, improving probe and pipette access while reducing residual dead volume during sample aspiration.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do these tubes include caps?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The neck is externally threaded to accept a compatible screw cap, but caps are not included in this pack. Order caps separately to match your closure and transport requirements.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can these tubes be centrifuged?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"They tolerate low-speed centrifugation within the mechanical limits of polypropylene. 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Supplied non-sterile in sealed 1000\/Bag packaging, part number 220-2469-08K is well suited for high-throughput clinical and research environments where consistent rotor fit and dimensional uniformity across the entire bag are essential. Lot-to-lot manufacturing controls ensure reliable conical geometry, wall thickness, and cap-thread performance in every unit.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e220-2469-08K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e15 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Style\u003c\/td\u003e\n\u003ctd\u003eThreaded — leak-resistant seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e1000\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCell culture harvesting — conical tip geometry concentrates cell pellets for complete recovery with minimal dead volume\u003c\/li\u003e\n\u003cli\u003eSerum and plasma separation — secure threaded closure prevents leakage during centrifugation and subsequent handling\u003c\/li\u003e\n\u003cli\u003eProtein precipitation and density gradient centrifugation — conical bottom allows precise visualization and recovery of distinct sample layers\u003c\/li\u003e\n\u003cli\u003eReagent preparation and storage — threaded seal reduces evaporation and contamination risk during extended storage\u003c\/li\u003e\n\u003cli\u003eClinical specimen processing — lot traceability supports compliance in CAP\/CLIA\/ISO 15189 accredited laboratories\u003c\/li\u003e\n\u003cli\u003eSample transport — leak-resistant threaded cap maintains sample integrity from bench to secondary processing location\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (e.g., toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eNot recommended — use with caution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (e.g., chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA at Caplugs® Evergreen ISO-certified manufacturing facilities, these tubes are produced from FDA-registered, virgin-grade PPC resin that is BPA-free and phthalate-free. Sealed bag packaging maintains product integrity from warehouse receipt through point-of-use, and lot-level quality controls provide the traceability required by accredited clinical and research laboratories. LabSupplies.com is an authorized Caplugs® Evergreen dealer, shipping from USA inventory with tiered pricing available for institutional purchasers, hospitals, and grant-funded research programs.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these centrifuge tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile in 1000\/Bag packaging. For applications requiring sterility, downstream sterilization or a sterile-grade product should be considered.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of a threaded cap over a snap-cap design?\u003c\/strong\u003e\u003cbr\u003eA threaded closure provides a more reliable leak-resistant seal under centrifugal force and during sample transport compared with snap-cap formats, reducing the risk of leakage and cross-contamination.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs Polypropylene Copolymer (PPC) autoclavable?\u003c\/strong\u003e\u003cbr\u003ePolypropylene-based materials are generally considered autoclavable; however, Caplugs® Evergreen does not list a sterility claim for these tubes, so verify your specific sterilization protocol and temperature tolerances before autoclaving production lots.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow do these tubes perform in standard centrifuge rotors?\u003c\/strong\u003e\u003cbr\u003eThe 15 mL conical format is dimensionally consistent with standard swing-bucket and fixed-angle rotor positions designed for 15 mL conical tubes. Lot-to-lot dimensional controls on 220-2469-08K support reliable fit across compatible centrifuge platforms.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"15 mL Conical Centrifuge Tubes, Threaded Cap — PPC, Natural, 1000\/Bag\",\"sku\":\"220246908KE1\",\"mpn\":\"220-2469-08K\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"150.46\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these centrifuge tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile in 1000\/Bag packaging. For applications requiring sterility, downstream sterilization or a sterile-grade product should be considered.\"}},{\"@type\":\"Question\",\"name\":\"What is the advantage of a threaded cap over a snap-cap design?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A threaded closure provides a more reliable leak-resistant seal under centrifugal force and during sample transport compared with snap-cap formats, reducing the risk of leakage and cross-contamination.\"}},{\"@type\":\"Question\",\"name\":\"Is Polypropylene Copolymer (PPC) autoclavable?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Polypropylene-based materials are generally considered autoclavable; however, Caplugs® Evergreen does not list a sterility claim for these tubes, so verify your specific sterilization protocol and temperature tolerances before autoclaving production lots.\"}},{\"@type\":\"Question\",\"name\":\"How do these tubes perform in standard centrifuge rotors?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The 15 mL conical format is dimensionally consistent with standard swing-bucket and fixed-angle rotor positions designed for 15 mL conical tubes. Lot-to-lot dimensional controls on 220-2469-08K support reliable fit across compatible centrifuge platforms.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48554923950312,"sku":"220246908KE1","price":150.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/220-2469-08K.png?v=1778708307"},{"product_id":"208-3040-020-surety-column-fine-filter","title":"1.5–2.4 mL Microcentrifuge Tubes, LDPE, Natural — 208-3040-020 | 500\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e1.5–2.4 mL Surety® Fine-Filter Mini Column, LDPE, Natural — SPE \u0026amp; LC-MS\/MS Sample Prep (208-3040-020)\u003c\/h2\u003e\n\u003cp\u003eThe Caplugs® Evergreen Surety® Mini 1.5″ column features a 15–45 micron fine-filter disk that delivers high-clarity filtrate for demanding sample-preparation workflows such as LC-MS\/MS injection prep, SPE protein-precipitation cleanup, and confirmatory reference-method testing. Molded in Low-Density Polyethylene (LDPE) in a 1.5–2.4 mL working-capacity body, these columns fit standard 2 mL microcentrifuge collection vessels and ship non-sterile in convenient 500\/Bag quantities. Made in USA, the Surety® line is engineered with low extractables and FDA-compliant, BPA-free resin — making it a reliable choice wherever sensitive downstream MS detection is involved.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e208-3040-020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSurety® Column, Fine Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Pore Size\u003c\/td\u003e\n\u003ctd\u003e15–45 microns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStyle\u003c\/td\u003e\n\u003ctd\u003eMini 1.5″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Capacity\u003c\/td\u003e\n\u003ctd\u003e1.5–2.4 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eLow-Density Polyethylene (LDPE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e500\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate \/ Latex\u003c\/td\u003e\n\u003ctd\u003eBPA-Free, Phthalate-Free, Latex-Free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC-MS\/MS injection preparation:\u003c\/strong\u003e The 15–45 micron fine filter removes residual particulates from protein-precipitation filtrates, protecting analytical columns and reducing costly column replacements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid-phase extraction (SPE) workflows:\u003c\/strong\u003e Compatible with bench microcentrifuge (up to 3,000 × g) and vacuum manifold platforms for efficient loading, washing, and elution steps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirmatory reference-method testing:\u003c\/strong\u003e High-clarity filtrate supports GC-MS and LC-UV confirmatory assays in clinical and forensic toxicology laboratories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual pressure-assisted elution:\u003c\/strong\u003e The inherent flexibility of LDPE allows gentle finger pressure to accelerate flow through the fine-filter disk without a centrifuge — a practical advantage during manual sample-prep runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral sample cleanup:\u003c\/strong\u003e Dilute organic modifier and aqueous buffer clarification ahead of any chromatographic or immunoassay platform requiring low-particulate samples.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe Surety® Mini 1.5″ column body is sized to seat directly into standard 2 mL microcentrifuge collection tubes, making it compatible with bench centrifuge workflows at up to 3,000 × g. For higher-throughput labs, the column format is compatible with Waters®, Phenomenex®, and Supelco® 96-well and tube-format SPE vacuum manifolds — verify tube adapter dimensions before deployment. The LDPE flex body also supports standalone manual pressure-elution at the bench without any additional hardware. Laboratories evaluating larger capacity needs may consider the Surety® Midi 1.9″ (208-3042-020, 2.4–3.5 mL) or the Surety® Standard 2.3″ (208-3045-020, 3.5–5.0 mL) siblings in the same product line.\u003c\/p\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers and saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids and bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute organic modifiers (methanol, acetonitrile \u0026lt;50%)\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlcohols (ethanol, isopropanol)\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConcentrated chlorinated solvents (chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoclaving\u003c\/td\u003e\n\u003ctd\u003eNot recommended (LDPE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Surety® columns are produced by Caplugs® Evergreen under ISO 9001 quality management from FDA-compliant LDPE resin that is BPA-free, phthalate-free, and latex-free. The fine-filter pore size of 15–45 microns provides tighter particulate exclusion than medium-filter alternatives, and LDPE's inherently low extractables profile makes it particularly well-suited for sensitive mass-spectrometric detection. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory; most stocking items ship the same business day, and volume pricing is available for institutional, hospital, and grant-funded procurement teams.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat collection tube does this column fit?\u003c\/strong\u003e\u003cbr\u003eThe Mini 1.5″ body is designed to seat into a standard 2 mL microcentrifuge collection tube. Confirm your tube's inner-diameter spec if you are using a non-standard vessel or a manifold adapter.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use these columns without a centrifuge?\u003c\/strong\u003e\u003cbr\u003eYes. Because the column body is molded from flexible LDPE, analysts can apply gentle finger pressure to assist flow through the fine-filter disk in manual, standalone bench workflows — no centrifuge is required for pressure-assisted elution.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does the fine filter (15–45 microns) differ from a medium-filter column?\u003c\/strong\u003e\u003cbr\u003eThe tighter pore range of 15–45 microns provides greater particulate exclusion than a medium-filter option, yielding a higher-clarity filtrate. This translates directly to fewer analytical column fouling events and lower downstream column replacement costs in LC-MS\/MS and confirmatory reference-method workflows.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these columns compatible with organic solvents used in SPE washes?\u003c\/strong\u003e\u003cbr\u003eLDPE tolerates aqueous buffers, dilute acids and bases, and short-term contact with dilute organic modifiers such as methanol and acetonitrile commonly used in SPE wash and elution steps. Concentrated chlorinated or aromatic solvents are not recommended, as they can swell or permeate LDPE.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"1.5–2.4 mL Surety® Fine-Filter Mini Column, LDPE, Natural, 500\/Bag — Caplugs® Evergreen 208-3040-020\",\"sku\":\"2083040020E1\",\"mpn\":\"208-3040-020\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Low-Density Polyethylene (LDPE)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"115.72\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What collection tube does this column fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The Mini 1.5″ body is designed to seat into a standard 2 mL microcentrifuge collection tube. Confirm your tube's inner-diameter spec if you are using a non-standard vessel or a manifold adapter.\"}},{\"@type\":\"Question\",\"name\":\"Can I use these columns without a centrifuge?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Because the column body is molded from flexible LDPE, analysts can apply gentle finger pressure to assist flow through the fine-filter disk in manual, standalone bench workflows — no centrifuge is required for pressure-assisted elution.\"}},{\"@type\":\"Question\",\"name\":\"How does the fine filter (15–45 microns) differ from a medium-filter column?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The tighter pore range of 15–45 microns provides greater particulate exclusion than a medium-filter option, yielding a higher-clarity filtrate. This translates directly to fewer analytical column fouling events and lower downstream column replacement costs in LC-MS\/MS and confirmatory reference-method workflows.\"}},{\"@type\":\"Question\",\"name\":\"Are these columns compatible with organic solvents used in SPE washes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"LDPE tolerates aqueous buffers, dilute acids and bases, and short-term contact with dilute organic modifiers such as methanol and acetonitrile commonly used in SPE wash and elution steps. Concentrated chlorinated or aromatic solvents are not recommended, as they can swell or permeate LDPE.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48554954457320,"sku":"2083040020E1","price":115.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/Surety_20Columns_1_479666c3-60dc-410d-8213-af92ce9382ea.png?v=1778708438"},{"product_id":"conical-centrifuge-tubes-30ml-ppc-2203928080e1","title":"30 mL Centrifuge Tubes, Conical Bottom, PPC, Natural — 220-3928-080 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e30 mL Conical Bottom Centrifuge Tubes — Threaded Cap, PPC, Natural (220-3928-080)\u003c\/h2\u003e\n\u003cp\u003eThese 30 mL conical bottom centrifuge tubes are molded from virgin-grade Polypropylene Copolymer (PPC) and feature a threaded, leak-resistant cap that outperforms snap-cap formats under centrifugal force and during sample transport. Supplied non-sterile in bulk (1000\/Bag), part number 220-3928-080 is well suited for clinical specimen processing, cell culture harvest, and preparative centrifugation workflows where consistent pellet recovery and secure closure are essential.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e220-3928-080\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e30 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Style\u003c\/td\u003e\n\u003ctd\u003eThreaded — leak-resistant seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e1000\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCell culture harvest: conical geometry concentrates cell pellets at the tube tip for complete recovery with minimal dead volume\u003c\/li\u003e\n\u003cli\u003eSerum and plasma separation: secure threaded closure maintains sample integrity before and after centrifugation\u003c\/li\u003e\n\u003cli\u003eProtein precipitation and density gradient centrifugation: reliable threaded seal prevents leakage at speed\u003c\/li\u003e\n\u003cli\u003eClinical specimen processing and storage: leak-resistant closure controls evaporation and contamination risk in CAP\/CLIA-regulated workflows\u003c\/li\u003e\n\u003cli\u003eReagent preparation and general sample storage requiring a robust, resealable 30 mL format\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eLimited — verify before use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen centrifuge tubes are manufactured under ISO-certified quality management from FDA-registered, virgin-grade PPC resin that is BPA-free and phthalate-free. Lot-to-lot dimensional consistency ensures reliable fit in standard centrifuge rotor positions and reproducible threaded cap torque performance across every 1000-tube bag. LabSupplies.com is an authorized Caplugs® Evergreen dealer, shipping from USA inventory with tiered pricing available for high-volume institutional and grant-funded purchasers.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these centrifuge tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile in 1000\/Bag bulk packaging. For applications requiring sterility, such as aseptic cell culture, consider a gamma-irradiated or certified sterile alternative.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill the threaded cap hold during centrifugation?\u003c\/strong\u003e\u003cbr\u003eYes. The threaded closure is designed to deliver a leak-resistant seal under centrifugal force, making it more reliable than snap-cap formats for sealed centrifugation and sample transport. Always confirm your specific centrifuge rotor's maximum RCF rating against your protocol requirements.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is Polypropylene Copolymer (PPC), and how does it differ from standard PP?\u003c\/strong\u003e\u003cbr\u003ePPC is a copolymer formulation of polypropylene that retains PP's excellent chemical resistance to aqueous buffers, dilute acids and bases, and common alcohols, while offering improved impact toughness and clarity compared to standard homopolymer PP. It is not suitable for use with chlorinated or aromatic solvents.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tubes suitable for regulated clinical laboratory workflows?\u003c\/strong\u003e\u003cbr\u003eThe tubes are manufactured under ISO-certified quality management with lot-level traceability, which supports documentation requirements in CAP\/CLIA and ISO 15189 environments. End users are responsible for validating the tubes within their specific laboratory quality system.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"30 mL Conical Bottom Centrifuge Tubes, Threaded Cap, PPC, Natural — 1000\/Bag\",\"sku\":\"2203928080E1\",\"mpn\":\"220-3928-080\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"157.04\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these centrifuge tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile in 1000\/Bag bulk packaging. For applications requiring sterility, such as aseptic cell culture, consider a gamma-irradiated or certified sterile alternative.\"}},{\"@type\":\"Question\",\"name\":\"Will the threaded cap hold during centrifugation?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The threaded closure is designed to deliver a leak-resistant seal under centrifugal force, making it more reliable than snap-cap formats for sealed centrifugation and sample transport. Always confirm your specific centrifuge rotor's maximum RCF rating against your protocol requirements.\"}},{\"@type\":\"Question\",\"name\":\"What is Polypropylene Copolymer (PPC), and how does it differ from standard PP?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"PPC is a copolymer formulation of polypropylene that retains PP's excellent chemical resistance to aqueous buffers, dilute acids and bases, and common alcohols, while offering improved impact toughness and clarity compared to standard homopolymer PP. It is not suitable for use with chlorinated or aromatic solvents.\"}},{\"@type\":\"Question\",\"name\":\"Are these tubes suitable for regulated clinical laboratory workflows?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The tubes are manufactured under ISO-certified quality management with lot-level traceability, which supports documentation requirements in CAP\/CLIA and ISO 15189 environments. End users are responsible for validating the tubes within their specific laboratory quality system.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48555882545384,"sku":"2203928080E1","price":157.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/220-3928-080.png?v=1778721559"},{"product_id":"conical-centrifuge-tubes-50ml-ppc-2203937080e1","title":"50 mL Centrifuge Tubes, Conical Bottom, PPC, Natural — 220-3937-080 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e50 mL Conical Centrifuge Tubes — Threaded Cap, PPC, Natural, 1000\/Bag (220-3937-080)\u003c\/h2\u003e\n\u003cp\u003eThese 50 mL conical-bottom centrifuge tubes are molded from virgin-grade Polypropylene Copolymer (PPC) and supplied non-sterile in sealed 1000\/Bag packaging for high-volume clinical and research workflows. The threaded cap delivers a leak-resistant seal that outperforms snap-cap formats under centrifugal force and during sample transport, while the conical bottom geometry concentrates cell pellets and precipitates at the tip for complete, low-dead-volume recovery. Lot-to-lot dimensional consistency ensures reliable seating in standard centrifuge rotor positions across the full case quantity.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e220-3937-080\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e50 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Style\u003c\/td\u003e\n\u003ctd\u003eThreaded — leak-resistant seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e1000\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCell culture harvesting — conical geometry pellets cells completely at the tube tip for maximum recovery\u003c\/li\u003e\n\u003cli\u003eSerum and plasma separation — threaded closure prevents leakage during centrifugation and subsequent handling\u003c\/li\u003e\n\u003cli\u003eProtein precipitation and density gradient centrifugation — precise pellet concentration at the conical tip\u003c\/li\u003e\n\u003cli\u003eClinical specimen processing and transport — secure threaded seal prevents evaporation and contamination\u003c\/li\u003e\n\u003cli\u003eReagent preparation and storage — chemical-resistant PPC compatible with aqueous buffers and common laboratory solvents\u003c\/li\u003e\n\u003cli\u003eSample preparation workflows in CAP-, CLIA-, and ISO 15189-accredited laboratories requiring lot-traceable consumables\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (e.g., toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eLimited — not recommended for prolonged contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (e.g., chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA at ISO-certified Caplugs® Evergreen manufacturing facilities, these tubes are produced from FDA-registered, virgin-grade PPC resin that is BPA-free and phthalate-free. Sealed 1000\/Bag packaging maintains product integrity from warehouse receipt through point-of-use, and lot-level quality controls ensure consistent conical geometry, wall thickness, and threaded cap torque performance across every bag. LabSupplies.com is an authorized Caplugs® Evergreen dealer, ships from USA inventory with same-business-day fulfillment for stocking items, and offers tiered pricing for institutional, hospital, and grant-funded laboratory accounts.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these centrifuge tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — the 50 mL tubes supplied under part number 220-3937-080 are non-sterile. They are intended for general cell culture, sample preparation, and specimen processing workflows where sterility is not a requirement. If your protocol requires sterile tubes, please contact us for alternatives.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre PPC centrifuge tubes autoclavable?\u003c\/strong\u003e\u003cbr\u003ePolypropylene Copolymer (PPC) offers good heat tolerance and is generally considered autoclavable; however, Caplugs® Evergreen has not published a validated autoclave cycle for these specific tubes. Confirm your sterilization requirements with your quality team before autoclaving, as the threaded cap seal may be affected by repeated high-temperature cycling.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat centrifuge rotors are these tubes compatible with?\u003c\/strong\u003e\u003cbr\u003eThe standard 50 mL conical format fits most swing-bucket and fixed-angle rotors designed for 50 mL conical tubes across major centrifuge platforms. Always verify maximum RCF ratings against your specific rotor manufacturer's specifications before centrifuging at high speeds.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy choose a threaded cap over a snap-cap design for these tubes?\u003c\/strong\u003e\u003cbr\u003eA threaded closure creates a more reliable leak-resistant seal under centrifugal force and during sample transport than a snap-cap format, reducing the risk of cross-contamination, evaporation, and sample loss — particularly important in clinical specimen handling and regulated laboratory environments.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"50 mL Conical Centrifuge Tubes, Threaded Cap, PPC, Natural — 1000\/Bag\",\"sku\":\"2203937080E1\",\"mpn\":\"220-3937-080\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"180.07\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these centrifuge tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — these 50 mL tubes are non-sterile. They are intended for general cell culture, sample preparation, and specimen processing workflows where sterility is not a requirement.\"}},{\"@type\":\"Question\",\"name\":\"Are PPC centrifuge tubes autoclavable?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Polypropylene Copolymer (PPC) offers good heat tolerance and is generally considered autoclavable; however, Caplugs® Evergreen has not published a validated autoclave cycle for these specific tubes. Confirm your sterilization requirements with your quality team before autoclaving, as the threaded cap seal may be affected by repeated high-temperature cycling.\"}},{\"@type\":\"Question\",\"name\":\"What centrifuge rotors are these tubes compatible with?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The standard 50 mL conical format fits most swing-bucket and fixed-angle rotors designed for 50 mL conical tubes across major centrifuge platforms. Always verify maximum RCF ratings against your specific rotor manufacturer's specifications before centrifuging at high speeds.\"}},{\"@type\":\"Question\",\"name\":\"Why choose a threaded cap over a snap-cap design for these tubes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A threaded closure creates a more reliable leak-resistant seal under centrifugal force and during sample transport than a snap-cap format, reducing the risk of cross-contamination, evaporation, and sample loss — particularly important in clinical specimen handling and regulated laboratory environments.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48555885330664,"sku":"2203937080E1","price":180.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/220-3937-080.png?v=1778721701"},{"product_id":"round-bottom-test-tubes-21ml-16-x-150mm-screw-cap-ps-2222099050e1","title":"21 mL Test Tubes, Screw Caps, PS, Natural — 222-2099-050 | 25\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e21 mL Round Bottom Test Tubes with Natural Screw Caps — PS, Sterile, 16 × 150 mm (222-2099-050)\u003c\/h2\u003e\n\u003cp\u003eThese 21 mL polystyrene round-bottom test tubes ship sterile and unassembled — tubes and natural screw caps packaged separately within each 25\/Bag unit for assembly immediately before use. At 16 × 150 mm, the round-bottom geometry concentrates cell pellets and precipitates at the tube base for efficient resuspension and aspiration after centrifugation, while the threaded natural screw cap delivers a leak-resistant closure for specimen containment during storage and transport. The optical clarity of polystyrene makes these tubes a standard choice for flow cytometry, immunofluorescence, and cell sorting workflows.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e222-2099-050\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e21 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e16 × 150 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eRound Bottom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Style\u003c\/td\u003e\n\u003ctd\u003eNatural Screw Cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\u003ctd\u003eUnassembled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolystyrene (PS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eSterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e25\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFlow cytometry and FACS analysis — round-bottom PS format is the standard tube geometry for most flow cytometer sample ports\u003c\/li\u003e\n\u003cli\u003eImmunofluorescence staining — polystyrene optical clarity supports visual and instrument-based inspection of fluorescent samples\u003c\/li\u003e\n\u003cli\u003eCell sorting — round bottom concentrates sorted cell populations for downstream recovery\u003c\/li\u003e\n\u003cli\u003eHematology sample preparation — 21 mL capacity accommodates larger-volume whole-blood and buffy-coat workflows\u003c\/li\u003e\n\u003cli\u003eSerological and agglutination assays — round-bottom geometry provides a defined endpoint for agglutination reading\u003c\/li\u003e\n\u003cli\u003eSpecimen collection and general sample handling — threaded screw cap ensures secure containment during centrifugation, transport, and storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline \/ PBS\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic \/ chlorinated solvents\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoclave \/ heat sterilization\u003c\/td\u003e\n\u003ctd\u003eNot recommended — PS is not autoclavable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen test tubes are manufactured at ISO-certified facilities using virgin-grade, FDA-registered polystyrene resin that is BPA-free and phthalate-free. Lot-level quality controls ensure consistent tube geometry, wall thickness, and dimensional uniformity across every bag. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered volume pricing available for clinical labs, research institutions, and biotech facilities operating under CAP, CLIA, or ISO 15189 accreditation.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these tubes sterile when they arrive?\u003c\/strong\u003e\u003cbr\u003eYes — part number 222-2099-050 is supplied sterile. Tubes and caps are packaged separately within the sealed bag and should be assembled immediately before use to maintain sterility at the point of use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy are the tubes and caps packaged unassembled?\u003c\/strong\u003e\u003cbr\u003eShipping tubes and caps separately prevents cap deformation and ensures the threaded closure seats correctly when assembled fresh before use, maintaining a reliable leak-resistant seal.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre polystyrene tubes suitable for centrifugation?\u003c\/strong\u003e\u003cbr\u003ePS tubes are compatible with standard low- to moderate-speed centrifugation as used in cell pelleting and sample preparation. Confirm the g-force limits with your centrifuge rotor specifications; PS is generally not rated for high-speed ultracentrifugation applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these tubes be used with standard flow cytometers?\u003c\/strong\u003e\u003cbr\u003eRound-bottom 12 × 75 mm tubes are the more common flow cytometry format, but many instruments and sample-handling racks also accommodate the 16 × 150 mm format. Verify that your cytometer's sample port or tube holder accepts 16 mm diameter tubes before ordering for automated workflows.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"21 mL Round Bottom Test Tubes with Natural Screw Caps, PS, Sterile, 16 × 150 mm — 25\/Bag\",\"sku\":\"2222099050E1\",\"mpn\":\"222-2099-050\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polystyrene (PS)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"213.73\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these tubes sterile when they arrive?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — they are supplied sterile. Tubes and caps are packaged separately within the sealed bag and should be assembled immediately before use to maintain sterility at the point of use.\"}},{\"@type\":\"Question\",\"name\":\"Why are the tubes and caps packaged unassembled?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Shipping tubes and caps separately prevents cap deformation and ensures the threaded closure seats correctly when assembled fresh before use, maintaining a reliable leak-resistant seal.\"}},{\"@type\":\"Question\",\"name\":\"Are polystyrene tubes suitable for centrifugation?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"PS tubes are compatible with standard low- to moderate-speed centrifugation as used in cell pelleting and sample preparation. Confirm the g-force limits with your centrifuge rotor specifications; PS is generally not rated for high-speed ultracentrifugation applications.\"}},{\"@type\":\"Question\",\"name\":\"Can these tubes be used with standard flow cytometers?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Round-bottom 12 × 75 mm tubes are the more common flow cytometry format, but many instruments and sample-handling racks also accommodate the 16 × 150 mm format. Verify that your cytometer's sample port or tube holder accepts 16 mm diameter tubes before ordering for automated workflows.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48555938185448,"sku":"2222099050E1","price":213.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/222-2099-050_01.jpg?v=1778723168"},{"product_id":"round-bottom-test-tubes-5-0ml-12-x-75mm-snap-cap-ppc-2222376080e1","title":"5.0 mL Test Tubes, Round Bottom, PPC, Natural — 222-2376-080 | 25\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e5.0 mL Round Bottom Test Tubes with Two-Position Snap Caps — PPC, Natural, Sterile, 25\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese 5.0 mL round bottom test tubes measure 12 × 75 mm and are constructed from virgin-grade Polypropylene Copolymer (PPC) in a natural (translucent) finish, supplied sterile and unassembled in 25\/Bag packaging. The round bottom geometry concentrates cell pellets and precipitates at the tube base for efficient resuspension and aspiration after centrifugation. Each tube is paired with a two-position snap cap that toggles between a vented configuration for gas exchange during incubation and a fully sealed position for containment during transport or storage.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e222-2376-080\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e5.0 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12 × 75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eRound Bottom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Type\u003c\/td\u003e\n\u003ctd\u003eTwo-Position Snap Cap (Vented \/ Sealed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\u003ctd\u003eUnassembled (tubes and caps packaged separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eSterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e25\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFlow cytometry and FACS analysis — the standard 12 × 75 mm round bottom format is compatible with most cytometer sample introduction systems\u003c\/li\u003e\n\u003cli\u003eImmunofluorescence staining protocols requiring multiple wash and resuspension steps\u003c\/li\u003e\n\u003cli\u003eCell sorting and pelleting — round bottom concentrates cells at a single point for complete, low-loss resuspension\u003c\/li\u003e\n\u003cli\u003eHematology sample preparation at the 5.0 mL working volume\u003c\/li\u003e\n\u003cli\u003eSerological testing and agglutination assays where round bottom format is required for reading precipitate patterns\u003c\/li\u003e\n\u003cli\u003eSpecimen collection and general laboratory sample handling where sterile, sealed packaging is required at point of receipt\u003c\/li\u003e\n\u003cli\u003eFreeze-thaw cycling applications — PPC flexibility and impact resistance reduce cracking under thermal stress\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (benzene, toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eUse with caution — limited resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA at Caplugs® Evergreen ISO-certified manufacturing facilities using domestically sourced, FDA-registered virgin-grade PPC resin, these tubes are free of BPA and phthalates. Lot-level quality controls ensure consistent tube geometry, wall thickness, and dimensional uniformity across every bag, supporting compliance in CAP-, CLIA-, and ISO 15189-accredited laboratories. LabSupplies.com is an authorized Caplugs® Evergreen dealer, shipping from USA inventory with tiered volume pricing available for institutional, hospital, and grant-funded procurement programs.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these tubes supplied already assembled with the snap caps attached?\u003c\/strong\u003e\u003cbr\u003eNo — part number 222-2376-080 is supplied unassembled, meaning tubes and snap caps are packaged separately within the bag. This preserves sterility and allows users to assemble each tube immediately before use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does the two-position snap cap do, and when would I use each position?\u003c\/strong\u003e\u003cbr\u003eThe snap cap has two distinct locked positions: a vented position that allows gas exchange — useful during cell incubation steps — and a fully sealed position that provides containment for centrifugation, transport, or storage. Switching between positions requires a simple push of the cap.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tubes compatible with standard flow cytometry instruments?\u003c\/strong\u003e\u003cbr\u003eYes. The 12 × 75 mm round bottom format is the widely accepted standard for flow cytometry sample introduction and is compatible with most cytometer sample probes and carousel-style autosampler systems. Confirm your instrument's tube diameter specification before ordering in high volume.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these tubes withstand freeze-thaw cycling and centrifugation?\u003c\/strong\u003e\u003cbr\u003ePolypropylene Copolymer (PPC) offers greater flexibility and impact resistance than standard homopolymer polypropylene, making these tubes well suited for centrifugation and repeated freeze-thaw cycles. Always confirm your centrifuge manufacturer's tube-compatibility ratings before use at high g-forces.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"5.0 mL Round Bottom Test Tubes with Two-Position Snap Caps, PPC, Natural, Sterile, 25\/Bag\",\"sku\":\"2222376080E1\",\"mpn\":\"222-2376-080\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"103.70\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these tubes supplied already assembled with the snap caps attached?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — these tubes are supplied unassembled, meaning tubes and snap caps are packaged separately within the bag. This preserves sterility and allows users to assemble each tube immediately before use.\"}},{\"@type\":\"Question\",\"name\":\"What does the two-position snap cap do, and when would I use each position?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The snap cap has two distinct locked positions: a vented position that allows gas exchange during cell incubation steps, and a fully sealed position for containment during centrifugation, transport, or storage.\"}},{\"@type\":\"Question\",\"name\":\"Are these tubes compatible with standard flow cytometry instruments?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The 12 × 75 mm round bottom format is the widely accepted standard for flow cytometry sample introduction and is compatible with most cytometer sample probes and carousel-style autosampler systems. Confirm your instrument's tube diameter specification before ordering in high volume.\"}},{\"@type\":\"Question\",\"name\":\"Can these tubes withstand freeze-thaw cycling and centrifugation?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Polypropylene Copolymer (PPC) offers greater flexibility and impact resistance than standard homopolymer polypropylene, making these tubes well suited for centrifugation and repeated freeze-thaw cycles. Always confirm your centrifuge manufacturer's tube-compatibility ratings before use at high g-forces.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48555938316520,"sku":"2222376080E1","price":103.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/222-2376-080.png?v=1778723173"},{"product_id":"round-bottom-test-tubes-16ml-17-x-100mm-snap-cap-ppc-2222393080e1","title":"16 mL Test Tubes, Round Bottom, PPC, Natural — 222-2393-080 | 25\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e16 mL Round Bottom Test Tubes with Two-Position Snap Caps — PPC, Natural, Sterile, 25\/Bag (222-2393-080)\u003c\/h2\u003e\n\u003cp\u003eThese 16 mL polypropylene copolymer (PPC) round bottom test tubes measure 17 × 100 mm and are supplied sterile and unassembled — tubes and snap caps packaged separately within the bag for assembly immediately before use. The round bottom geometry concentrates cell pellets and precipitates at the tube base for efficient resuspension and aspiration after centrifugation, while the two-position snap cap enables either vented or sealed operation to suit incubation and transport workflows alike.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e222-2393-080\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e16 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e17 × 100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eRound Bottom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Type\u003c\/td\u003e\n\u003ctd\u003eTwo-Position Snap Cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\u003ctd\u003eUnassembled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eSterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e25\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFlow cytometry and FACS analysis — the standard 17 × 100 mm round bottom format fits most instrument sample probes directly\u003c\/li\u003e\n\u003cli\u003eImmunofluorescence staining and cell sorting, where round bottom geometry ensures complete pellet recovery after centrifugation\u003c\/li\u003e\n\u003cli\u003eHematology sample preparation and serological \/ agglutination assays requiring a contained, resealable tube\u003c\/li\u003e\n\u003cli\u003eVented incubation of cell cultures or assay reactions using the snap cap's open position, then sealed containment during transport or storage\u003c\/li\u003e\n\u003cli\u003eGeneral specimen collection and sample handling in clinical, research, and biotech environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (e.g., toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eLimited — not recommended for prolonged contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (e.g., chloroform)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA at Caplugs® Evergreen ISO-certified facilities from virgin-grade, FDA-registered PPC resin, these tubes are BPA-free and phthalate-free. Lot-level quality controls verify consistent tube geometry, wall thickness, and dimensional uniformity across every bag, supporting traceability requirements under CAP, CLIA, and ISO 15189 accreditation. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered pricing available for high-volume and grant-funded institutions.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these tubes supplied already assembled with the snap caps attached?\u003c\/strong\u003e\u003cbr\u003eNo — part number 222-2393-080 is supplied unassembled, with tubes and two-position snap caps packaged separately within each bag. This preserves sterility and allows assembly immediately before use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does \"two-position snap cap\" mean in practice?\u003c\/strong\u003e\u003cbr\u003eThe snap cap has two distinct locking positions: an open (vented) position that allows gas exchange during cell culture incubation, and a closed (sealed) position that provides containment for transport, centrifugation, or storage. Switching between positions requires only a simple finger press.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these tubes be used in a centrifuge?\u003c\/strong\u003e\u003cbr\u003eYes — PPC (polypropylene copolymer) offers flexibility and impact resistance suited to centrifugation, and the round bottom concentrates pellets at the base for efficient resuspension. Always confirm your centrifuge rotor's maximum RCF and tube-size compatibility before use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tubes compatible with standard flow cytometry instruments?\u003c\/strong\u003e\u003cbr\u003eThe 17 × 100 mm round bottom format is the standard geometry for most flow cytometer and FACS sample-probe systems. Confirm your specific instrument's tube-dimension requirements against the 17 × 100 mm specification before switching from your current supply.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"16 mL Round Bottom Test Tubes with Two-Position Snap Caps, PPC, Natural, Sterile — 25\/Bag\",\"sku\":\"2222393080E1\",\"mpn\":\"222-2393-080\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"120.13\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these tubes supplied already assembled with the snap caps attached?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied unassembled, with tubes and two-position snap caps packaged separately within each bag. 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Confirm your specific instrument's tube-dimension requirements against the 17 × 100 mm specification before switching from your current supply.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48555939561704,"sku":"2222393080E1","price":120.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/222-2094-050_01_0508c81e-17a2-40c0-b578-3b2e355c09ca.jpg?v=1778723210"},{"product_id":"round-bottom-test-tubes-16ml-17-x-100mm-snap-cap-ppc-222239408ie1","title":"16 mL Test Tubes, Round Bottom, PPC, Natural — 222-2394-08I | 1\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e16 mL Round-Bottom Test Tubes with Two-Position Snap Caps — PPC, Natural, Sterile (222-2394-08I)\u003c\/h2\u003e\n\u003cp\u003eThese 16 mL polypropylene copolymer (PPC) round-bottom test tubes measure 17 × 100 mm and arrive sterile in individual packaging, ready for flow cytometry, cell sorting, immunofluorescence, and other cell-based workflows where maintaining sterility through point-of-use is critical. The integrated two-position snap cap toggles between a vented configuration for gas exchange during incubation and a sealed configuration for containment during transport or centrifugation. Part number 222-2394-08I is manufactured by Caplugs® Evergreen from virgin-grade, FDA-registered PPC resin at an ISO-certified domestic facility.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e222-2394-08I\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e16 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e17 × 100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eRound Bottom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Type\u003c\/td\u003e\n\u003ctd\u003eTwo-Position Snap Cap (vented \/ sealed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eSterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e1 \/ Individually Packed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Cytometry \u0026amp; FACS:\u003c\/strong\u003e The 17 × 100 mm round-bottom format is the standard geometry for most flow cytometer sample-uptake probes; the two-position cap seals tubes during transport to the instrument.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCell Sorting \u0026amp; Immunofluorescence:\u003c\/strong\u003e Round-bottom geometry concentrates stained cell populations into a tight pellet after centrifugation, enabling efficient resuspension in buffer or antibody solution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHematology Sample Preparation:\u003c\/strong\u003e The 16 mL working volume accommodates whole-blood dilutions and lysis protocols common in CBC differential workflows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerological \u0026amp; Agglutination Testing:\u003c\/strong\u003e The round base promotes uniform agglutination patterns for gel card or tube-based blood bank assays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral Specimen Handling \u0026amp; Storage:\u003c\/strong\u003e Individual sterile packaging makes these tubes suitable for primary specimen collection and freeze-thaw cycling without cross-contamination risk.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (benzene, toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eUse with caution — verify before use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen tubes are produced under ISO-certified quality management using virgin-grade, FDA-registered PPC resin that is BPA-free and phthalate-free. Individual sterile packaging provides lot-level traceability to support CAP, CLIA, and ISO 15189 accreditation documentation requirements. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered volume pricing available for hospitals, reference labs, and research institutions purchasing on grant or institutional accounts.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these tubes sterile, and does individual packaging preserve that sterility?\u003c\/strong\u003e\u003cbr\u003eYes — each tube is sterilized and sealed in individual packaging at the factory. The sterility barrier remains intact until you open the package, making these tubes appropriate for cell culture, specimen collection, and any workflow where contamination control is paramount.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does \"two-position snap cap\" mean in practice?\u003c\/strong\u003e\u003cbr\u003eThe cap has two distinct locking positions: one that leaves a small vent opening for gas exchange during incubation or when using CO₂-sensitive assays, and a second fully closed position that seals the tube for centrifugation, transport, or storage. No separate cap or parafilm is needed to switch between the two modes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these tubes be used in a centrifuge, and will the round bottom hold up?\u003c\/strong\u003e\u003cbr\u003eThe PPC construction provides the flexibility and impact resistance needed for routine centrifugation. The round bottom concentrates pellets at a single focal point, which simplifies aspiration of supernatant and resuspension of cell pellets. Always verify your centrifuge rotor's tube-diameter and g-force ratings against the 17 × 100 mm format before use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tubes compatible with CAP- and CLIA-regulated laboratories?\u003c\/strong\u003e\u003cbr\u003eThe ISO-certified manufacturing process and individual lot traceability make these tubes suitable for accredited clinical environments. Lot numbers are available for documentation in quality management systems supporting CAP, CLIA, and ISO 15189 compliance.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"16 mL Round-Bottom Test Tubes with Two-Position Snap Caps, PPC, Natural, Sterile, 1\/Individually Packed\",\"sku\":\"222239408IE1\",\"mpn\":\"222-2394-08I\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"231.82\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these tubes sterile, and does individual packaging preserve that sterility?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — each tube is sterilized and sealed in individual packaging at the factory. The sterility barrier remains intact until you open the package, making these tubes appropriate for cell culture, specimen collection, and any workflow where contamination control is paramount.\"}},{\"@type\":\"Question\",\"name\":\"What does 'two-position snap cap' mean in practice?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The cap has two distinct locking positions: one that leaves a small vent opening for gas exchange during incubation or when using CO₂-sensitive assays, and a second fully closed position that seals the tube for centrifugation, transport, or storage. No separate cap or parafilm is needed to switch between the two modes.\"}},{\"@type\":\"Question\",\"name\":\"Can these tubes be used in a centrifuge, and will the round bottom hold up?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The PPC construction provides the flexibility and impact resistance needed for routine centrifugation. The round bottom concentrates pellets at a single focal point, which simplifies aspiration of supernatant and resuspension of cell pellets. Always verify your centrifuge rotor's tube-diameter and g-force ratings against the 17 × 100 mm format before use.\"}},{\"@type\":\"Question\",\"name\":\"Are these tubes compatible with CAP- and CLIA-regulated laboratories?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The ISO-certified manufacturing process and individual lot traceability make these tubes suitable for accredited clinical environments. Lot numbers are available for documentation in quality management systems supporting CAP, CLIA, and ISO 15189 compliance.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48555939627240,"sku":"222239408IE1","price":231.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/222-2094-050_01_ab75777e-ccfa-4f38-b06d-d3cc896216a0.jpg?v=1778723211"},{"product_id":"208-3387-060-universal-column","title":"1.5 mL Microcentrifuge Tubes, PP, Natural — 208-3387-060 | 200\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e1.5 mL–Compatible Universal SPE Columns, Coarse Filter (90–135 µm), PP, Natural — 200\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese Caplugs® Evergreen universal SPE columns feature an integrated 90–135 µm coarse-filter disk molded from FDA-compliant polypropylene, supplied non-sterile in 200\/Bag packaging. The universal body geometry adapts to 1.5 mL, 2 mL, and 5 mL collection tube positions and is compatible with gravity-flow, vacuum manifold, and benchtop centrifuge workflows — making part number 208-3387-060 a flexible, format-independent choice for labs running multiple SPE protocols. The coarse pore size maximizes flow rate through high-particulate matrices where finer filter grades would blind prematurely.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e208-3387-060\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eUniversal (multi-format)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Grade\u003c\/td\u003e\n\u003ctd\u003eCoarse — 90–135 µm integrated disk\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e200\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate\u003c\/td\u003e\n\u003ctd\u003eBPA-Free, Phthalate-Free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSolid-phase extraction (SPE) of high-particulate environmental matrices — soil and sediment extracts, high-solids surface water, and industrial effluent samples where coarse pore size prevents premature filter blinding\u003c\/li\u003e\n\u003cli\u003eCell lysate and bioreactor broth clarification prior to downstream purification or analysis\u003c\/li\u003e\n\u003cli\u003eGravity-flow and vacuum-manifold SPE workflows requiring a format-independent column body\u003c\/li\u003e\n\u003cli\u003eCentrifuge-assisted extraction using standard 1.5 mL or 2 mL collection tubes at benchtop g-forces\u003c\/li\u003e\n\u003cli\u003eMethod scouting and protocol development across multiple collection tube formats without purchasing format-specific columns\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe universal column body is engineered to seat in standard 1.5 mL microcentrifuge tube positions, 2 mL collection tubes (the primary format for most universal-column workflows), and 5 mL collection tubes — though users should verify outside-diameter fit when using the 5 mL format, as tube tolerances vary by manufacturer. These columns also adapt to multi-port vacuum SPE manifolds equipped with universal tube holders and to any gravity-flow SPE bench stand, eliminating the need for length-matched manifold holders that length-specific columns require. Labs building a complete universal PP filter-grade set can pair these coarse-filter columns with the 208-3388-060 (medium filter, 45–90 µm) and 208-3389-060 (fine filter, 15–45 µm) from the same Caplugs® Evergreen series.\u003c\/p\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers and saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids and bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol \/ ethanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChloroform \/ methylene chloride\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetone\u003c\/td\u003e\n\u003ctd\u003eLimited — short-term contact only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA under ISO 9001 quality management, these Caplugs® Evergreen universal SPE columns are produced from FDA-compliant polypropylene resin and are certified BPA-free and phthalate-free. The integrated filter disk is molded directly into the column body, eliminating loose frits and ensuring consistent pore geometry across every unit in the bag. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, typically the same business day for stocking items; volume pricing is available for labs ordering ten or more bags.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes a \"universal\" column different from a standard SPE column?\u003c\/strong\u003e\u003cbr\u003eThe universal body geometry is designed to fit multiple collection tube formats — 1.5 mL, 2 mL, and 5 mL positions — and works across gravity-flow, vacuum manifold, and centrifuge platforms without requiring a length-matched holder. This makes it well suited for method development or for labs running more than one SPE workflow on shared equipment.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy choose the 90–135 µm coarse filter instead of a finer grade?\u003c\/strong\u003e\u003cbr\u003eCoarser pore sizes allow high-particulate matrices — such as soil extracts, cell lysates, and bioreactor broths — to pass through without blinding the filter disk. If your sample is largely particle-free, a medium (45–90 µm) or fine (15–45 µm) filter grade from the same series will provide tighter particulate retention.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these columns compatible with organic solvents used in typical SPE elution steps?\u003c\/strong\u003e\u003cbr\u003ePolypropylene offers broad compatibility with the solvents most commonly used in SPE, including acetonitrile, methanol, ethanol, and isopropanol, as well as dilute acids and bases. Chlorinated solvents such as chloroform or methylene chloride and aromatic solvents such as toluene are not recommended for use with PP.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these columns be autoclaved or reused?\u003c\/strong\u003e\u003cbr\u003ePolypropylene is autoclavable as a material; however, SPE columns are manufactured and validated as single-use consumables. Reuse is not recommended, as carryover contamination and filter integrity loss between samples can compromise results.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Universal SPE Columns, Coarse Filter 90–135 µm, Polypropylene, Natural — 200\/Bag\",\"sku\":\"2083387060E1\",\"mpn\":\"208-3387-060\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene (PP)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"163.18\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What makes a 'universal' column different from a standard SPE column?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The universal body geometry is designed to fit multiple collection tube formats — 1.5 mL, 2 mL, and 5 mL positions — and works across gravity-flow, vacuum manifold, and centrifuge platforms without requiring a length-matched holder. This makes it well suited for method development or for labs running more than one SPE workflow on shared equipment.\"}},{\"@type\":\"Question\",\"name\":\"Why choose the 90–135 µm coarse filter instead of a finer grade?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Coarser pore sizes allow high-particulate matrices — such as soil extracts, cell lysates, and bioreactor broths — to pass through without blinding the filter disk. If your sample is largely particle-free, a medium (45–90 µm) or fine (15–45 µm) filter grade from the same series will provide tighter particulate retention.\"}},{\"@type\":\"Question\",\"name\":\"Are these columns compatible with organic solvents used in typical SPE elution steps?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Polypropylene offers broad compatibility with the solvents most commonly used in SPE, including acetonitrile, methanol, ethanol, and isopropanol, as well as dilute acids and bases. 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Reuse is not recommended, as carryover contamination and filter integrity loss between samples can compromise results.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48555949949160,"sku":"2083387060E1","price":163.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/208-3389-060_01_5c3a7859-37c1-4b6b-b317-072760e2023d.jpg?v=1778723695"},{"product_id":"208-3388-060-universal-column","title":"1.5 mL Microcentrifuge Tubes, PP, Natural — 208-3388-060 | 200\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003eUniversal SPE Columns with Medium Filter (45–90 µm), PP, Natural — 200\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese Caplugs® Evergreen universal solid-phase extraction columns feature an integrated medium-grade filter (45–90 µm pore size) molded from natural polypropylene, supplied non-sterile in 200\/Bag packaging. The universal column body is engineered to fit standard 1.5 mL, 2 mL, and 5 mL collection tube positions and to operate across gravity-flow, vacuum manifold, and centrifuge-driven workflows — eliminating the format-specific column lock-in that complicates multi-method labs. Part number 208-3388-060 represents the medium-pore option in the Caplugs® Evergreen universal PP column series, balancing flow rate and filtrate clarity for the widest range of routine sample matrices.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e208-3388-060\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eUniversal Column\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Grade\u003c\/td\u003e\n\u003ctd\u003eMedium (45–90 µm integrated filter disk)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e200\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Status\u003c\/td\u003e\n\u003ctd\u003eBPA-Free, Phthalate-Free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSerum and plasma cleanup prior to LC-MS\/MS, immunoassay, or HPLC analysis\u003c\/li\u003e\n\u003cli\u003eModerately turbid urine sample preparation for clinical and toxicological workflows\u003c\/li\u003e\n\u003cli\u003eEnvironmental matrix SPE — water, soil extracts, and food matrices with moderate suspended-solid loads\u003c\/li\u003e\n\u003cli\u003eGravity-flow and vacuum manifold SPE across multi-port platforms with universal tube holders\u003c\/li\u003e\n\u003cli\u003eCentrifuge-driven sample processing at standard bench centrifuge speeds (≈3000×g) in 1.5 mL, 2 mL, or 5 mL collection tube positions\u003c\/li\u003e\n\u003cli\u003eMethod scouting and protocol development where a single column format must serve multiple downstream collection-tube configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe universal column body geometry is designed to seat in standard 1.5 mL microcentrifuge tube positions, 2 mL collection tubes (the primary format for most universal column workflows), and 5 mL collection tubes — confirm outer-diameter clearance with your specific 5 mL tube format before use. On the automation and manifold side, these columns adapt to multi-port vacuum SPE manifolds equipped with universal tube holders and to any gravity-flow SPE bench stand, making them compatible with commonly used open-platform SPE systems from major laboratory suppliers. Because no length-matched manifold holder is required, labs running diverse SPE platforms can stock a single column SKU across multiple methods. The medium 45–90 µm pore size is the standard-balance filter grade for this format; for coarser filtration needs see the companion 208-3387-060 (90–135 µm coarse filter), and for fine filtration see 208-3389-060 (15–45 µm fine filter).\u003c\/p\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers and saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids and bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol \/ ethanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetone\u003c\/td\u003e\n\u003ctd\u003eLimited — avoid prolonged contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen universal SPE columns are manufactured under ISO 9001 quality management from FDA-compliant, BPA-free, phthalate-free polypropylene resin with a molded integrated filter disk for consistent pore geometry across every column in the bag. LabSupplies.com is an authorized dealer and ships from USA inventory, typically same business day for stocking items, with volume pricing available for laboratories ordering ten or more bags — well suited to institutional procurement cycles, grant-funded research accounts, and high-throughput clinical prep labs.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat sample types are best suited to the medium 45–90 µm filter grade?\u003c\/strong\u003e\u003cbr\u003eThe medium pore size is the general-purpose choice for serum, plasma, moderately turbid urine, and environmental or food matrices that carry a moderate suspended-solid load. It delivers a practical balance of flow rate and filtrate clarity without the slower throughput of fine-grade columns. For heavily particulate matrices choose the coarse 90–135 µm grade (208-3387-060); for demanding clarity requirements use the fine 15–45 µm grade (208-3389-060).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill these columns work on a vacuum manifold as well as a benchtop centrifuge?\u003c\/strong\u003e\u003cbr\u003eYes. The universal column body is designed to operate across gravity-flow, vacuum manifold, and centrifuge-driven workflows. No length-matched manifold holder is required for manifold use, and the polypropylene construction maintains dimensional stability under standard centrifuge force and vacuum, ensuring consistent geometry across all three elution modes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these SPE columns sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile. For most SPE sample-preparation workflows sterility is not a requirement, but if your assay demands a sterile consumable, please contact your application specialist before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan polypropylene columns be used with acetonitrile- or methanol-based mobile phases?\u003c\/strong\u003e\u003cbr\u003eYes. Polypropylene offers good compatibility with acetonitrile and methanol, the most common organic modifiers in reversed-phase and protein-precipitation SPE workflows. Chlorinated solvents such as chloroform or dichloromethane, and aromatic solvents such as toluene, are not recommended for use with PP columns.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Universal SPE Columns, Medium Filter (45–90 µm), Polypropylene, Natural — 200\/Bag\",\"sku\":\"2083388060E1\",\"mpn\":\"208-3388-060\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene (PP)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"163.18\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What sample types are best suited to the medium 45–90 µm filter grade?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The medium pore size is the general-purpose choice for serum, plasma, moderately turbid urine, and environmental or food matrices that carry a moderate suspended-solid load. It delivers a practical balance of flow rate and filtrate clarity. For heavily particulate matrices choose the coarse 90–135 µm grade (208-3387-060); for demanding clarity requirements use the fine 15–45 µm grade (208-3389-060).\"}},{\"@type\":\"Question\",\"name\":\"Will these columns work on a vacuum manifold as well as a benchtop centrifuge?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The universal column body is designed to operate across gravity-flow, vacuum manifold, and centrifuge-driven workflows. No length-matched manifold holder is required for manifold use, and the polypropylene construction maintains dimensional stability under standard centrifuge force and vacuum.\"}},{\"@type\":\"Question\",\"name\":\"Are these SPE columns sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile. For most SPE sample-preparation workflows sterility is not a requirement, but if your assay demands a sterile consumable, please contact your application specialist before ordering.\"}},{\"@type\":\"Question\",\"name\":\"Can polypropylene columns be used with acetonitrile- or methanol-based mobile phases?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Polypropylene offers good compatibility with acetonitrile and methanol, the most common organic modifiers in reversed-phase and protein-precipitation SPE workflows. Chlorinated solvents such as chloroform or dichloromethane, and aromatic solvents such as toluene, are not recommended.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48555950047464,"sku":"2083388060E1","price":163.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/208-3389-060_01_3c95482c-e08b-406c-bd0b-d58868264c22.jpg?v=1778723698"},{"product_id":"208-3389-060-universal-column","title":"1.5 mL Microcentrifuge Tubes, PP, Natural — 208-3389-060 | 200\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003eUniversal Fine-Filter SPE Columns, 15–45 µm PP — Multi-Format Gravity, Vacuum \u0026amp; Centrifuge Use (208-3389-060)\u003c\/h2\u003e\n\u003cp\u003eThese Caplugs® Evergreen universal polypropylene SPE columns feature an integrated 15–45 micron fine-filter disk that delivers the highest filtrate clarity in the PP column line, making them the preferred choice for LC-MS\/MS injection preparation, GC-MS confirmatory cleanup, and any protocol where residual particulates cause analytical column fouling or baseline noise. The universal body geometry adapts to 1.5 mL, 2 mL, and 5 mL collection tube positions and is compatible with both gravity-flow and vacuum manifold workflows without requiring a length-matched manifold holder. Supplied non-sterile in 200\/Bag packaging, part number 208-3389-060 is a practical high-throughput option for labs running diverse SPE protocols across multiple platform types.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e208-3389-060\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eUniversal Column\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Grade\u003c\/td\u003e\n\u003ctd\u003eFine (15–45 µm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e200\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Status\u003c\/td\u003e\n\u003ctd\u003eBPA-Free, Phthalate-Free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLC-MS\/MS injection preparation requiring maximum particulate removal before analytical column entry\u003c\/li\u003e\n\u003cli\u003eGC-MS confirmatory cleanup where filtrate clarity directly affects detection baselines\u003c\/li\u003e\n\u003cli\u003eDissolution testing filtration in pharmaceutical QC workflows\u003c\/li\u003e\n\u003cli\u003eEnvironmental and biological matrix SPE cleanup across varied sample types\u003c\/li\u003e\n\u003cli\u003eMethod scouting and development where a universal geometry eliminates format-specific column lock-in\u003c\/li\u003e\n\u003cli\u003eProtein precipitation clarification prior to instrumental analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe universal column body is engineered to seat in standard 1.5 mL microcentrifuge tube positions for bench centrifuge runs (up to approximately 3000×g), 2 mL collection tube positions for gravity-flow or centrifuge workflows, and 5 mL collection tube positions for larger sample-load protocols (verify column outer diameter fit with your specific 5 mL tube format before use). For vacuum-driven workflows, the universal geometry adapts to multi-port SPE manifolds with universal tube holders, accommodating various manifold port sizes without a dedicated length-matched holder. Gravity-flow bench stands are also supported, where the fine 15–45 µm filter pore size is particularly well suited to high-clarity filtrate requirements. Labs building out a complete Universal PP column set can pair these fine-filter columns with the 208-3387-060 (Coarse Filter, 90–135 µm) and 208-3388-060 (Medium Filter, 45–90 µm) for full-range pore-size coverage across the same universal platform.\u003c\/p\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers and saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids and bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetone\u003c\/td\u003e\n\u003ctd\u003eLimited — short-term contact only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen SPE columns are manufactured under ISO 9001 quality management from FDA-compliant, BPA-free, phthalate-free polypropylene resin, with the fine-filter disk molded integrally into each column body for consistent pore geometry across the full lot. LabSupplies.com is an authorized dealer of Caplugs® Evergreen consumables and ships from USA inventory, typically same business day for stocking items, with volume pricing available at ten or more bags for institutional, clinical, and grant-funded laboratories.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes the fine-filter grade different from the coarse or medium options?\u003c\/strong\u003e\u003cbr\u003eThe 15–45 µm pore size of these columns provides the highest filtrate clarity in the Universal PP column series — ideal for sensitive downstream techniques such as LC-MS\/MS and GC-MS where even small particulates can foul analytical columns or elevate baseline noise. The coarse (90–135 µm) and medium (45–90 µm) grades are better suited to higher-viscosity matrices or workflows where throughput is prioritized over maximum clarity.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these columns compatible with vacuum manifolds as well as centrifuges?\u003c\/strong\u003e\u003cbr\u003eYes. The universal body geometry is designed for gravity-flow, vacuum manifold, and centrifuge workflows without requiring a length-matched manifold holder. For vacuum manifolds, confirm that your manifold uses a universal tube holder configuration to ensure a proper seat.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these SPE columns sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile in 200\/Bag packaging. For applications requiring sterile filtration, additional downstream processing steps should be incorporated per your laboratory's validated method.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan polypropylene columns be used with acetonitrile and methanol mobile phases?\u003c\/strong\u003e\u003cbr\u003eYes. Polypropylene offers excellent compatibility with acetonitrile, methanol, aqueous buffers, and dilute acids and bases — the solvents most commonly used in SPE conditioning, washing, and elution steps. Chlorinated and aromatic solvents should be avoided, as PP has limited resistance to those chemical classes.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Universal Fine-Filter SPE Columns, 15–45 µm, Polypropylene, Natural — 200\/Bag\",\"sku\":\"2083389060E1\",\"mpn\":\"208-3389-060\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene (PP)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"163.18\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What makes the fine-filter grade different from the coarse or medium options?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The 15–45 µm pore size provides the highest filtrate clarity in the Universal PP column series — ideal for LC-MS\/MS and GC-MS where particulates can foul analytical columns or elevate baseline noise. 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For applications requiring sterile filtration, additional downstream processing steps should be incorporated per your laboratory's validated method.\"}},{\"@type\":\"Question\",\"name\":\"Can polypropylene columns be used with acetonitrile and methanol mobile phases?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Polypropylene offers excellent compatibility with acetonitrile, methanol, aqueous buffers, and dilute acids and bases — the solvents most commonly used in SPE conditioning, washing, and elution steps. Chlorinated and aromatic solvents should be avoided, as PP has limited resistance to those chemical classes.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48555950113000,"sku":"2083389060E1","price":163.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/208-3389-060_01_17fe4a8f-ff2d-4197-9279-8c21a374b01a.jpg?v=1778723701"},{"product_id":"freestanding-centrifuge-tubes-green-caps-30ml-ppc-2223530g80e1","title":"Freestanding Centrifuge Tubes, 30 mL, PPC, Natural with Green Caps, Sterile, 10\/Bag | Caplugs® Evergreen","description":"\u003ch1\u003eCaplugs® Evergreen 30 mL Freestanding Centrifuge Tubes, Sterile PPC, Natural Body with Green Caps, 10\/Bag\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eCaplugs® Evergreen 30 mL Freestanding Centrifuge Tubes\u003c\/strong\u003e are molded from polypropylene copolymer (PPC) with a self-standing base, letting tubes stand upright without a rack during sample collection, decanting, and reagent transfers. Supplied sterile and unassembled with green screw caps, they suit clinical specimen processing, cell culture handling, and routine spin-down protocols.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFreestanding Centrifuge Tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\/Size\u003c\/td\u003e\n\u003ctd\u003e30 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC), Natural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure\/Cap\u003c\/td\u003e\n\u003ctd\u003eGreen Screw Cap (supplied unassembled)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eSterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e10\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCollection and transport of biological specimens prior to processing\u003c\/li\u003e\n\u003cli\u003eCell suspension handling and pellet recovery after centrifugation\u003c\/li\u003e\n\u003cli\u003eReagent and buffer aliquoting where upright bench storage is needed\u003c\/li\u003e\n\u003cli\u003eSample preparation in clinical, microbiology, and molecular workflows\u003c\/li\u003e\n\u003cli\u003eDecanting and supernatant transfer without rack support\u003c\/li\u003e\n\u003cli\u003eShort-term refrigerated or frozen storage of aqueous samples\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003elabsupplies.com is an authorized Caplugs® Evergreen dealer shipping from US inventory. These tubes are Made in USA. Each bag carries lot numbers that support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available for volume orders.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eDo these tubes come with the caps attached?\u003c\/h3\u003e\n\u003cp\u003eNo. The tubes ship unassembled, with the natural PPC tubes and green screw caps packaged separately within each bag of 10.\u003c\/p\u003e\n\u003ch3\u003eAre the tubes sterile out of the bag?\u003c\/h3\u003e\n\u003cp\u003eYes. They are supplied sterile, making them ready for clinical specimen collection and cell culture work without additional processing.\u003c\/p\u003e\n\u003ch3\u003eCan these tubes stand on their own?\u003c\/h3\u003e\n\u003cp\u003eYes. The freestanding base lets each 30 mL tube remain upright on the bench without a rack during filling, decanting, and reagent transfers.\u003c\/p\u003e\n\u003ch3\u003eWhat material are the tubes made from?\u003c\/h3\u003e\n\u003cp\u003eThe tubes are molded from polypropylene copolymer (PPC) in a natural color, offering good rigidity and chemical tolerance for routine aqueous laboratory samples.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Caplugs® Evergreen 30 mL Freestanding Centrifuge Tubes, Sterile PPC, Natural with Green Caps, 10\/Bag\",\n  \"sku\": \"222-3530-G80\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Caplugs® Evergreen\"\n  },\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"priceCurrency\": \"USD\",\n    \"price\": \"189.11\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"labsupplies.com\"\n    }\n  }\n}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do these tubes come with the caps attached?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. The tubes ship unassembled, with the natural PPC tubes and green screw caps packaged separately within each bag of 10.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are the tubes sterile out of the bag?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. 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