{"product_id":"conical-centrifuge-tubes-50ml-green-caps-ppc-non-sterile-1000-bag-printed-graduations-white-marking-box-unassembled-caplugs-evergreen-2403937g8pr2e1","title":"50 mL Centrifuge Tubes, Conical Bottom, PPC, Green — 240-3937-G8PR2 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e50 mL Conical Centrifuge Tubes — Threaded Cap, PPC, Green, 1000\/Bag (240-3937-G8PR2)\u003c\/h2\u003e\n\u003cp\u003eThese 50 mL conical-bottom centrifuge tubes from Caplugs® Evergreen are molded from virgin-grade Polypropylene Copolymer (PPC) and feature a threaded, leak-resistant cap for reliable sealing during centrifugation, storage, and sample transport. Supplied non-sterile in 1000\/Bag packaging, part number 240-3937-G8PR2 is manufactured at ISO-certified facilities and offers lot-to-lot dimensional consistency for dependable fit in standard 50 mL centrifuge rotor positions across clinical, research, and biotech 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\u003e240-3937-G8PR2\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\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\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 concentrates cell pellets at the tube tip for maximum recovery with minimal dead volume\u003c\/li\u003e\n\u003cli\u003eSerum and plasma separation — threaded closure maintains a secure seal during centrifugation and subsequent cold storage\u003c\/li\u003e\n\u003cli\u003eProtein precipitation and density gradient centrifugation — conical bottom enables clean phase separation and complete pellet recovery\u003c\/li\u003e\n\u003cli\u003eSample preparation and reagent storage — leak-resistant threaded cap prevents evaporation and contamination during extended storage or transit\u003c\/li\u003e\n\u003cli\u003eClinical specimen processing in CAP\/CLIA and ISO 15189 environments — lot-level traceability supports quality documentation requirements\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 \/ chlorinated solvents\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 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. Rigorous lot-level quality controls govern conical geometry, wall thickness, and threaded cap torque performance across every 1000-tube bag, ensuring consistent results run to run. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered volume pricing available for high-throughput clinical labs, core facilities, and grant-funded research groups.\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 sealed 1000\/Bag packaging. For applications requiring sterility, downstream sterilization by autoclave is compatible with PPC; however, confirm rotor and cap tolerances before autoclaving filled tubes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does the threaded cap compare to a snap-cap design for centrifugation and transport?\u003c\/strong\u003e\u003cbr\u003eThe threaded closure provides a more secure, leak-resistant seal than snap-cap formats under centrifugal force and during sample transport, reducing the risk of evaporation or cross-contamination in transit and long-term cold storage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of PPC over standard polypropylene for centrifuge tubes?\u003c\/strong\u003e\u003cbr\u003ePolypropylene Copolymer (PPC) retains the broad chemical resistance and autoclavability of homopolymer PP while offering improved impact toughness and flexibility at low temperatures — particularly useful for samples stored at –20 °C or below and for higher-g centrifugation runs.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tubes compatible with standard centrifuge rotors?\u003c\/strong\u003e\u003cbr\u003eYes — the 50 mL conical format is dimensionally consistent with standard fixed-angle and swinging-bucket rotor positions designed for 50 mL conical tubes. Verify the maximum RCF rating of your specific rotor against your protocol requirements before use.\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, Green — 1000\/Bag\",\"sku\":\"2403937G8PR2E1\",\"mpn\":\"240-3937-G8PR2\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Green\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"321.70\",\"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 centrifuge tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile in sealed 1000\/Bag packaging. PPC is autoclavable, but confirm rotor and cap tolerances before autoclaving filled tubes.\"}},{\"@type\":\"Question\",\"name\":\"How does the threaded cap compare to a snap-cap design for centrifugation and transport?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The threaded closure provides a more secure, leak-resistant seal than snap-cap formats under centrifugal force and during sample transport, reducing the risk of evaporation or cross-contamination.\"}},{\"@type\":\"Question\",\"name\":\"What is the advantage of PPC over standard polypropylene for centrifuge tubes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Polypropylene Copolymer (PPC) retains the broad chemical resistance and autoclavability of homopolymer PP while offering improved impact toughness and flexibility at low temperatures — useful for samples stored at –20 °C or below and for higher-g centrifugation runs.\"}},{\"@type\":\"Question\",\"name\":\"Are these tubes compatible with standard centrifuge rotors?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — the 50 mL conical format is dimensionally consistent with standard fixed-angle and swinging-bucket rotor positions designed for 50 mL conical tubes. Verify the maximum RCF rating of your specific rotor against your protocol requirements before use.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48558377238760,"sku":"2403937G8PR2E1","price":321.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/14_925cd52b-c78f-4721-be16-38ca244b2c50.png?v=1781064630","url":"https:\/\/labsupplies.com\/products\/conical-centrifuge-tubes-50ml-green-caps-ppc-non-sterile-1000-bag-printed-graduations-white-marking-box-unassembled-caplugs-evergreen-2403937g8pr2e1","provider":"LabSupplies.com","version":"1.0","type":"link"}