{"product_id":"caplugs-300-3900-g2k-cryosure-cryogenic-vial-caps","title":"Vial Caps, HDPE, Green — 300-3900-G2K | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003eCryoSure® Cryogenic Vial Caps — HDPE, Green, Non-Sterile, 1000\/Bag (300-3900-G2K)\u003c\/h2\u003e\n\u003cp\u003eThese CryoSure® cryogenic vial caps are molded from high-density polyethylene (HDPE) and designed for secure closure of cryogenic vials during ultra-low temperature and liquid nitrogen storage. Supplied in green for straightforward color-coded sample organization, part number 300-3900-G2K is available in a convenient bulk pack of 1000 caps per bag for high-throughput freezing workflows. The non-sterile designation makes them well suited for applications where sterility is not a requirement.\u003c\/p\u003e\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\u003e300-3900-G2K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eCryoSure®\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eCryogenic Vial Caps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-Density Polyethylene (HDPE)\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\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\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eReplacement or supplemental capping of cryogenic vials in biorepository and biobanking workflows\u003c\/li\u003e\n\u003cli\u003eColor-coded organization of frozen sample collections by sample type, donor group, or study cohort\u003c\/li\u003e\n\u003cli\u003eLong-term storage of biological specimens at ultra-low temperatures, including liquid nitrogen vapor phase\u003c\/li\u003e\n\u003cli\u003eHigh-volume cryopreservation operations requiring bulk cap availability\u003c\/li\u003e\n\u003cli\u003eRe-capping of cryovials after aliquoting or intermediate sample access\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMaterial \u0026amp; Chemical Resistance\u003c\/h2\u003e\n\u003cp\u003eHigh-density polyethylene (HDPE) provides excellent general chemical resistance to aqueous solutions, dilute acids and bases, and many common laboratory reagents, making it a reliable choice for demanding cryogenic environments. HDPE maintains meaningful flexibility and toughness even at very low temperatures, which helps preserve a secure seal on cryogenic vials. Note that HDPE is not recommended for autoclaving, and compatibility with concentrated oxidizing acids, aromatic solvents, and chlorinated solvents should be evaluated before use.\u003c\/p\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, Caplugs® Evergreen CryoSure® vial caps are produced under ISO 9001 quality management from BPA-free, phthalate-free, latex-free resin. LabSupplies.com is an authorized dealer of Caplugs® Evergreen products and ships from USA inventory, with tiered volume pricing available for biobanks, core facilities, and procurement teams managing large freezing programs.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these cryogenic vial caps sterile?\u003c\/strong\u003e\u003cbr\u003eNo — the 300-3900-G2K caps are supplied non-sterile in bulk 1000\/Bag packaging. For applications requiring sterility, additional aseptic handling or a sterile-format product should be considered.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan HDPE caps withstand liquid nitrogen temperatures?\u003c\/strong\u003e\u003cbr\u003eHDPE retains meaningful toughness and flexibility at cryogenic temperatures, making it a well-established material choice for low-temperature vial closures. Always confirm compatibility with your specific storage conditions and vial format before committing to large-scale use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the benefit of the green color?\u003c\/strong\u003e\u003cbr\u003eThe green color enables quick visual differentiation within a freezer box or rack, supporting color-coded sample management systems that reduce the risk of mix-ups when working with multiple sample groups or studies.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"CryoSure® Cryogenic Vial Caps, HDPE, Green, Non-Sterile, 1000\/Bag\",\"sku\":\"3003900G2KE1\",\"mpn\":\"300-3900-G2K\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"High-Density Polyethylene (HDPE)\",\"color\":\"Green\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"67.89\",\"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 cryogenic vial caps sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — the 300-3900-G2K caps are supplied non-sterile in bulk 1000\/Bag packaging. For applications requiring sterility, additional aseptic handling or a sterile-format product should be considered.\"}},{\"@type\":\"Question\",\"name\":\"Can HDPE caps withstand liquid nitrogen temperatures?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"HDPE retains meaningful toughness and flexibility at cryogenic temperatures, making it a well-established material choice for low-temperature vial closures. Always confirm compatibility with your specific storage conditions and vial format before committing to large-scale use.\"}},{\"@type\":\"Question\",\"name\":\"What is the benefit of the green color?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The green color enables quick visual differentiation within a freezer box or rack, supporting color-coded sample management systems that reduce the risk of mix-ups when working with multiple sample groups or studies.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48580045668584,"sku":"3003900G2KE1","price":81.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/300-3900-G20_01_37de350b-68b3-418d-b22d-7061ef2f8f72.jpg?v=1779410295","url":"https:\/\/labsupplies.com\/products\/caplugs-300-3900-g2k-cryosure-cryogenic-vial-caps","provider":"LabSupplies.com","version":"1.0","type":"link"}