{"product_id":"mst-cryogenic-conical-tubes-2-0ml-graduated-ppc-2203952pr080e1","title":"2.0 mL Caps, Conical Bottom, PPC, Natural — 220-3952-PR080 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e2.0 mL MST™ Cryogenic Conical-Bottom Tubes — PPC, Natural, Printed Graduations (220-3952-PR080)\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 that maintains flexibility and crack resistance at temperatures where standard polypropylene homopolymer becomes brittle — making them suitable for the full cryogenic range from −80 °C ultra-low temperature freezers through liquid nitrogen storage at −196 °C. Supplied non-sterile with printed graduation markings in 1000\/Bag packaging, part number 220-3952-PR080 is well suited to biobanking, cell line storage, and clinical biospecimen workflows that demand reliable long-term cryogenic performance.\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-PR080\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\u003eTube Type\u003c\/td\u003e\n\u003ctd\u003eMST™ Cryogenic Conical Tube\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\u003eCryogenic Rating\u003c\/td\u003e\n\u003ctd\u003eLN2 \/ Vapor-Phase N2 \/ −80 °C ULT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduations\u003c\/td\u003e\n\u003ctd\u003ePrinted\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\u003eLiquid nitrogen (LN2) and vapor-phase nitrogen cryogenic storage at −196 °C\u003c\/li\u003e\n\u003cli\u003eUltra-low temperature (−80 °C ULT) freezer archiving of DNA, RNA, serum, and plasma aliquots\u003c\/li\u003e\n\u003cli\u003eBiobanking and long-term cell line, tissue sample, and clinical biospecimen cryopreservation\u003c\/li\u003e\n\u003cli\u003eDry ice shipment of temperature-sensitive biological materials\u003c\/li\u003e\n\u003cli\u003eCell pellet recovery after centrifugation — the conical bottom concentrates sample at the tube tip for complete microvolume retrieval\u003c\/li\u003e\n\u003cli\u003eVolume monitoring during aliquoting and cryogenic fill level tracking via freeze-thaw-resistant printed graduations\u003c\/li\u003e\n\u003cli\u003eCAP\/CLIA and ISO 15189 workflows 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 (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 (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's ISO-certified manufacturing facilities, these MST™ cryogenic tubes are produced from virgin-grade, FDA-registered PPC resin that is BPA-free and phthalate-free. Sealed 1000\/Bag packaging preserves 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 institutional purchasers, biobanks, and grant-funded research programs.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these tubes rated for direct liquid nitrogen immersion?\u003c\/strong\u003e\u003cbr\u003eYes — the PPC construction is rated for the full cryogenic range including direct liquid nitrogen (LN2) immersion at −196 °C as well as vapor-phase nitrogen and −80 °C ULT freezer storage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy use PPC instead of standard polypropylene for cryogenic tubes?\u003c\/strong\u003e\u003cbr\u003ePolypropylene homopolymer becomes brittle below approximately −40 °C, increasing the risk of cracking during cryogenic handling. Polypropylene copolymer (PPC) retains flexibility at cryogenic temperatures, reducing breakage and the associated risk of sample loss.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill the printed graduations remain legible after repeated freeze-thaw cycles?\u003c\/strong\u003e\u003cbr\u003eYes — the printed graduation markings on these tubes are designed to withstand cryogenic temperatures and repeated freeze-thaw cycles, maintaining legibility through long-term biobank storage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tubes supplied sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile. For workflows requiring sterile tubes, please contact LabSupplies.com to inquire about sterile MST™ cryogenic tube options.\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, Printed Graduations — 1000\/Bag\",\"sku\":\"2203952PR080E1\",\"mpn\":\"220-3952-PR080\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"192.32\",\"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 rated for direct liquid nitrogen immersion?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — the PPC construction is rated for the full cryogenic range including direct liquid nitrogen (LN2) immersion at -196 °C as well as vapor-phase nitrogen and -80 °C ULT freezer storage.\"}},{\"@type\":\"Question\",\"name\":\"Why use PPC instead of standard polypropylene for cryogenic tubes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Polypropylene homopolymer becomes brittle below approximately -40 °C, increasing the risk of cracking during cryogenic handling. 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