{"product_id":"mst-cryogenic-freestanding-tubes-2-0ml-ppc-2203953080e1","title":"2.0 mL Racks, Freestanding, PPC, Natural — 220-3953-080 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e2.0 mL Freestanding Flat-Bottom Cryogenic Tubes — PPC, Natural, 1000\/Bag (220-3953-080)\u003c\/h2\u003e\n\u003cp\u003eThese MST™ 2.0 mL cryogenic tubes feature a freestanding flat-bottom design and are molded from polypropylene copolymer (PPC) for reliable performance across the full cryogenic range — from −80 °C ultra-low temperature freezers through liquid nitrogen storage at −196 °C. Supplied non-sterile in sealed 1000\/Bag packaging, part number 220-3953-080 is well suited for biobanking, cell line archiving, and clinical biospecimen programs that require consistent tube geometry and cap seal integrity at scale.\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\u003e220-3953-080\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\u003eTube Type\u003c\/td\u003e\n\u003ctd\u003eMST™ Cryogenic Freestanding Tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eFlat Bottom (Freestanding)\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 (−196 °C) \/ Vapor-Phase N₂ \/ −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\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\u003eLong-term biobanking and biospecimen archiving in liquid nitrogen or vapor-phase nitrogen dewars\u003c\/li\u003e\n\u003cli\u003eCell line cryopreservation and storage at −80 °C ULT or −196 °C LN₂\u003c\/li\u003e\n\u003cli\u003eDNA, RNA, and genomic material storage requiring cryogenic temperature stability\u003c\/li\u003e\n\u003cli\u003eSerum and plasma aliquot cryopreservation for clinical and translational research\u003c\/li\u003e\n\u003cli\u003eTissue sample archiving and clinical biospecimen management under CAP\/CLIA\/ISO 15189 programs\u003c\/li\u003e\n\u003cli\u003eDry ice shipment of frozen biological samples\u003c\/li\u003e\n\u003cli\u003eBenchtop aliquoting workflows where freestanding placement eliminates the need for a rack\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\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (toluene, xylene, etc.)\u003c\/td\u003e\n\u003ctd\u003eNot recommended — verify before use\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, these MST™ cryogenic tubes are manufactured by Caplugs® Evergreen at ISO-certified facilities using virgin-grade, FDA-registered PPC resin — free of BPA, phthalates, and latex. PPC construction is a deliberate material choice: unlike standard PP homopolymer, which can become brittle below −40 °C, PPC maintains flexibility and crack resistance at cryogenic temperatures, protecting irreplaceable samples during freeze-thaw cycles and mechanical handling. Each 1000\/Bag lot ships with full lot-number and manufacturing-date traceability to support CAP, CLIA, and ISO 15189 quality programs. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with volume pricing available for institutional purchasing offices and grant-funded laboratories.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — the 2.0 mL MST™ cryogenic tubes are supplied non-sterile in sealed 1000\/Bag packaging. For applications requiring sterility, the tubes should be sterilized according to your facility's validated protocol or sterile alternatives should be sourced.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy use PPC instead of standard polypropylene for cryogenic storage?\u003c\/strong\u003e\u003cbr\u003eStandard PP homopolymer can become brittle and prone to cracking when subjected to temperatures below approximately −40 °C. Polypropylene copolymer (PPC) retains flexibility and impact resistance down to −196 °C (liquid nitrogen), making it the preferred material for LN₂ and ultra-low temperature applications where tube failure could compromise irreplaceable samples.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo the tubes have volume graduation markings?\u003c\/strong\u003e\u003cbr\u003eNo — these tubes do not include graduation markings. Volume estimation by visual inspection is not supported; volumes should be measured prior to dispensing or by weight if exact quantities are required.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tubes suitable for liquid-phase liquid nitrogen submersion?\u003c\/strong\u003e\u003cbr\u003eYes — the cryogenic rating includes direct liquid nitrogen immersion at −196 °C as well as vapor-phase nitrogen storage. Lot-level quality controls verify consistent wall thickness and snap-cap seal integrity to support both storage modes.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"MST™ 2.0 mL Freestanding Flat-Bottom Cryogenic Tubes, PPC, Natural, Non-Sterile, 1000\/Bag\",\"sku\":\"2203953080E1\",\"mpn\":\"220-3953-080\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"74.03\",\"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 tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — the 2.0 mL MST™ cryogenic tubes are supplied non-sterile in sealed 1000\/Bag packaging. For applications requiring sterility, the tubes should be sterilized according to your facility's validated protocol or sterile alternatives should be sourced.\"}},{\"@type\":\"Question\",\"name\":\"Why use PPC instead of standard polypropylene for cryogenic storage?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Standard PP homopolymer can become brittle and prone to cracking when subjected to temperatures below approximately −40 °C. Polypropylene copolymer (PPC) retains flexibility and impact resistance down to −196 °C (liquid nitrogen), making it the preferred material for LN₂ and ultra-low temperature applications where tube failure could compromise irreplaceable samples.\"}},{\"@type\":\"Question\",\"name\":\"Do the tubes have volume graduation markings?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — these tubes do not include graduation markings. 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