{"product_id":"heathrow-conical-tubes-50ml-sterile","title":"Heathrow Scientific 50mL Conical Tubes - HS4427 - Sterile, DNase\/RNase-Free, Case of 500","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eEvery cell culture, centrifugation, and sample processing workflow eventually depends on a steady supply of 50 mL conical tubes. The Heathrow Scientific HS4427 50 mL Conical Centrifuge Tube is engineered to deliver on every standard — sterile and DNase\/RNase-free lot to lot, rated to 9,500 × g, with imprinted 5 mL graduations up to 50 mL and a leak-proof screw cap with writing area. Available in two case formats: Bulk Wrap for labs with their own racks, and Racked for labs that prefer tubes pre-organized in recyclable chipboard racks.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eBoth formats ship in a Case of 500 tubes with lot-to-lot traceability and easy-tear packaging. The 3-year sterile expiration date provides long-term stock shelf life for labs ordering in bulk. Polypropylene construction is chemical-resistant and fully autoclavable for downstream sterilization when 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\"\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\u003eSterile with 3-Year Shelf Life:\u003c\/strong\u003e Factory-sterile with a 3-year sterile expiration date — long shelf life supports bulk stock purchasing programs without sterilization date pressure.\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 and RNase Free:\u003c\/strong\u003e Lot-certified clean — eliminates nuclease contamination risk in RNA isolation, genomics, and molecular biology applications where tube cleanliness is non-negotiable.\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\u003e9,500 × g Centrifuge Rating:\u003c\/strong\u003e High-speed rated for standard conical tube centrifuge protocols — suitable for cell pelleting, precipitation, and density gradient applications at standard centrifuge RPM 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\u003eImprinted 5 mL Graduations:\u003c\/strong\u003e Clearly marked volume indicators at every 5 mL interval up to 50 mL — accurate visual volume reading without a separate graduated cylinder.\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 Screw Cap with Writing Area:\u003c\/strong\u003e Flat polyethylene cap provides a secure seal for sample containment and a writable surface for direct labeling — no separate cap labels required.\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:\u003c\/strong\u003e Easy-tear packaging includes lot information for complete batch traceability — essential for GLP, GMP, and regulated research environments.\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\u003eAvailable Bulk Wrap or Racked:\u003c\/strong\u003e Choose Bulk Wrap (HS4427B) for labs with existing conical tube racks; choose Racked (HS4427R, 20 racks × 25 tubes) for labs that prefer pre-organized tubes in recyclable chipboard racks.\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 (Bulk Wrap)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHS4427B\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU (Racked)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHS4427R\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\u003e50 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.1 in (2.9 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e114 mm\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\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGraduations\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 mL intervals up to 50 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCap Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLeak-proof screw cap (polyethylene, with writing area)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSterile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes — 3-year sterile expiration\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\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\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity per Case\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500 tubes (Bulk Wrap: 1 bag of 500; Racked: 20 racks × 25 tubes)\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\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\"\u003eBulk Wrap vs. Racked — Which Should I Order?\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFormat\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003cth\u003ePackaging\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBulk Wrap\u003c\/td\u003e\n\u003ctd\u003eHS4427B\u003c\/td\u003e\n\u003ctd\u003eLabs with existing conical tube racks\u003c\/td\u003e\n\u003ctd\u003e500 tubes in single bulk bag\u003c\/td\u003e\n\u003ctd\u003eLower per-tube cost\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRacked\u003c\/td\u003e\n\u003ctd\u003eHS4427R\u003c\/td\u003e\n\u003ctd\u003eLabs wanting pre-organized, ready-to-use tubes\u003c\/td\u003e\n\u003ctd\u003e20 chipboard racks × 25 tubes\u003c\/td\u003e\n\u003ctd\u003eConvenient organization included\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\"\u003eCell culture media preparation and sterile reagent aliquoting where DNase\/RNase-free sterile tubes are required from the first use\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\"\u003eHigh-speed centrifugation for cell pelleting, density gradients, and precipitation protocols up to 9,500 × g\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\"\u003eRNA isolation and genomics sample collection where nuclease-free tube certification is required throughout the protocol\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\"\u003eRegulated research and GLP environments requiring lot-traceable, certified sterile consumables with documented expiration dates\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\u003eAre these tubes compatible with standard conical tube centrifuge rotors?\u003cbr\u003e\u003c\/strong\u003eYes. The HS4427 tubes have standard 50 mL conical geometry compatible with fixed-angle and swinging-bucket centrifuge rotors from Beckman Coulter®, Thermo Scientific®, Eppendorf®, and other major manufacturers. Confirm your rotor's maximum rated speed does not exceed 9,500 × g for these tubes.\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 difference between Bulk Wrap and Racked?\u003cbr\u003e\u003c\/strong\u003eSee the comparison table above. Bulk Wrap (HS4427B) delivers 500 tubes in a single bag at a lower per-tube price — ideal for labs with existing tube racks. Racked (HS4427R) delivers 20 chipboard racks of 25 tubes each, organized for immediate benchtop use. Both contain the same 50 mL sterile DNase\/RNase-free tubes.\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 the chipboard racks in the Racked version recyclable?\u003cbr\u003e\u003c\/strong\u003eYes. The chipboard racks used in the Racked format (HS4427R) are made from recyclable material, which reduces the environmental footprint compared to plastic rack packaging.\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 long is the sterile expiration?\u003cbr\u003e\u003c\/strong\u003eBoth formats carry a 3-year sterile expiration date from the manufacture date — check the lot label for the specific expiration date of each case received.\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 manufactures HS4427 50 mL Conical Tubes from virgin polypropylene with lot-by-lot certification for sterility, DNase-free status, and RNase-free status. Each case includes lot traceability documentation. Tubes are tested for 9,500 × g structural integrity and leak-proof cap seal performance prior to release.\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":"Bulk Wrap","offer_id":48075528437992,"sku":"HS4427B","price":216.0,"currency_code":"USD","in_stock":true},{"title":"Racked","offer_id":48075528470760,"sku":"HS4427R","price":207.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/unnamed_b9c5a232-b954-4cda-9538-bf5f6a69b904.jpg?v=1771817215","url":"https:\/\/labsupplies.com\/products\/heathrow-conical-tubes-50ml-sterile","provider":"LabSupplies.com","version":"1.0","type":"link"}