{"product_id":"conical-centrifuge-tubes-threaded-15ml-ppc-220246908ke1","title":"15 mL Centrifuge Tubes, Conical Bottom, PPC, Natural — 220-2469-08K | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e15 mL Conical Centrifuge Tubes, Threaded Cap — Polypropylene Copolymer (PPC), Natural, 1000\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese 15 mL conical-bottom centrifuge tubes are molded from virgin-grade Polypropylene Copolymer (PPC) and feature a threaded closure that delivers a leak-resistant seal for centrifugation, sample storage, and transport. 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. 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