{"product_id":"mst-cryogenic-conical-tubes-2-0ml-ppc-2203952080e1","title":"2.0 mL Caps, Conical Bottom, PPC, Natural — 220-3952-080 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e2.0 mL MST™ Cryogenic Conical-Bottom Tubes — PPC, Natural, Non-Sterile (220-3952-080)\u003c\/h2\u003e\n\u003cp\u003eThese 2.0 mL MST™ cryogenic conical-bottom tubes from Caplugs® Evergreen are constructed from polypropylene copolymer (PPC), a material chosen specifically for its flexibility and crack resistance at cryogenic temperatures where standard polypropylene becomes brittle. Supplied non-sterile in 1000\/Bag sealed packaging, part number 220-3952-080 is rated for the full cryogenic range — from -80°C ultra-low temperature freezers through liquid nitrogen immersion at -196°C — making it a reliable choice for biobanking, cell storage, and long-term biospecimen archiving.\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\u003e220-3952-080\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 Bottom\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\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\u003eCryogenic Rating\u003c\/td\u003e\n\u003ctd\u003eLN2 (-196°C) \/ Vapor-Phase Nitrogen \/ -80°C ULT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduations\u003c\/td\u003e\n\u003ctd\u003eNone\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\u003eBiobanking and long-term cryopreservation in liquid nitrogen (LN2, -196°C) or vapor-phase nitrogen storage systems\u003c\/li\u003e\n\u003cli\u003eUltra-low temperature (-80°C) freezer storage of DNA, RNA, serum, plasma, and tissue samples\u003c\/li\u003e\n\u003cli\u003eCell line archiving and primary cell cryopreservation workflows\u003c\/li\u003e\n\u003cli\u003eDry ice shipment of cryogenic biospecimens during sample transfer or clinical logistics\u003c\/li\u003e\n\u003cli\u003eClinical biospecimen management in CAP-, CLIA-, and ISO 15189-regulated laboratories requiring full lot traceability\u003c\/li\u003e\n\u003cli\u003eMicrovolume pellet recovery — the conical bottom concentrates cell pellets and precipitates at the tube tip for complete retrieval after centrifugation and thaw\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 (IPA)\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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these MST™ cryogenic tubes are produced at Caplugs® Evergreen's ISO-certified manufacturing facility using virgin-grade, FDA-registered PPC resin that is BPA-free and phthalate-free. Each bag carries a lot number and manufacturing date to support full documentation in CAP-, CLIA-, and ISO 15189-accredited laboratories. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from domestic inventory, with tiered volume pricing available for high-throughput biobanks, hospital systems, and grant-funded research programs.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhy use PPC instead of standard polypropylene for cryogenic tubes?\u003c\/strong\u003e\u003cbr\u003eStandard polypropylene homopolymer can become brittle below approximately -40°C, increasing the risk of cracking during LN2 storage or retrieval. Polypropylene copolymer (PPC) retains flexibility and impact resistance down to -196°C, which is why it is the preferred material for liquid-nitrogen-rated cryogenic tubes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tubes graduated?\u003c\/strong\u003e\u003cbr\u003eNo — these tubes do not have printed volume graduations. Volume monitoring during filling should be performed gravimetrically or with a calibrated pipettor rather than by visual mark estimation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tubes sterile?\u003c\/strong\u003e\u003cbr\u003eThey are supplied non-sterile. For applications requiring sterility — such as primary cell culture or clinical specimen collection — aseptic technique or sterile-filtered reagents should be used in conjunction with these tubes, or a sterile-certified product should be sourced instead.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo these tubes come with caps, and are the caps rated for liquid nitrogen?\u003c\/strong\u003e\u003cbr\u003eYes, each tube includes a snap cap. The tubes and caps are rated for the full cryogenic range including liquid nitrogen immersion at -196°C and vapor-phase nitrogen storage.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"2.0 mL MST™ Cryogenic Conical-Bottom Tubes, PPC, Natural, Non-Sterile — 1000\/Bag\",\"sku\":\"2203952080E1\",\"mpn\":\"220-3952-080\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"77.74\",\"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\":\"Why use PPC instead of standard polypropylene for cryogenic tubes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Standard polypropylene homopolymer can become brittle below approximately -40°C, increasing the risk of cracking during LN2 storage or retrieval. 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