{"product_id":"caplugs-300-3900-l20-cryosure-cryogenic-vial-caps","title":"Vial Caps, HDPE, Lavender — 300-3900-L20 | 200\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003eCryoSure® Cryogenic Vial Caps — HDPE, Lavender, 200\/Bag (300-3900-L20)\u003c\/h2\u003e\n\u003cp\u003eThese CryoSure® cryogenic vial caps are engineered for reliable sealing of cryogenic vials under the demanding temperature extremes of cryostorage, supplied non-sterile in a convenient 200\/Bag bulk pack. Molded from high-density polyethylene (HDPE), they deliver the toughness and flexibility needed to maintain a secure closure from liquid nitrogen temperatures through room-temperature handling. The distinctive lavender color supports easy visual identification and color-coded sample management in biorepositories and research freezers.\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-L20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eCryogenic Vial Caps\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\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\u003eLavender\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\u003e200\/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 spare caps for cryogenic vials used in long-term biological sample storage\u003c\/li\u003e\n\u003cli\u003eColor-coded organization of cryobanked specimens, cell lines, or frozen aliquots\u003c\/li\u003e\n\u003cli\u003eBiorepository and biobank sample management requiring visual lot or group differentiation\u003c\/li\u003e\n\u003cli\u003eRe-capping cryovials after sample retrieval and re-freezing workflows\u003c\/li\u003e\n\u003cli\u003eGeneral ultra-low temperature and liquid nitrogen freezer storage applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMaterial \u0026amp; Chemical Resistance\u003c\/h2\u003e\n\u003cp\u003eHigh-density polyethylene (HDPE) provides excellent resistance to aqueous solutions, dilute acids and bases, and a broad range of common laboratory reagents, making it well suited to biological sample storage environments. HDPE maintains reasonable flexibility and impact resistance at cryogenic temperatures, which helps preserve cap integrity and sealing performance through freeze-thaw cycling. Note that HDPE is not recommended for autoclaving, and compatibility with chlorinated or aromatic solvents should be verified 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 HDPE resin. LabSupplies.com is an authorized dealer and ships from USA inventory, typically same business day for stocking items, with tiered pricing available for institutional and grant-funded laboratories.\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 — they are supplied non-sterile in 200\/Bag bulk packaging. If sterility is required for your application, downstream decontamination procedures should be applied according to your laboratory's protocols.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill HDPE caps hold up at liquid nitrogen temperatures?\u003c\/strong\u003e\u003cbr\u003eHDPE retains useful toughness and flexibility at cryogenic temperatures, making it a commonly used material for cryostorage closures. It is designed to resist embrittlement during freeze-thaw cycling typical of cryogenic workflows.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the lavender color help in the lab?\u003c\/strong\u003e\u003cbr\u003eThe lavender color allows quick visual differentiation of cryovials by sample type, project, or storage group, reducing the risk of mix-ups in densely stocked cryogenic racks, boxes, and freezers.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"CryoSure® Cryogenic Vial Caps, HDPE, Lavender, 200\/Bag\",\"sku\":\"3003900L20E1\",\"mpn\":\"300-3900-L20\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"High-Density Polyethylene (HDPE)\",\"color\":\"Lavender\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"14.17\",\"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 — they are supplied non-sterile in 200\/Bag bulk packaging. 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