{"product_id":"caplugs-300-3010-w2n-hdpe-screw-cap-15ml-centrifuge-transport-vial-white","title":"15 mL Centrifuge Tubes, Screw Caps, HDPE, White — 300-3010-W2N | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e15 mL Centrifuge Tube \u0026amp; Transport Vial Screw Caps — HDPE, White, 1000\/Bag (300-3010-W2N)\u003c\/h2\u003e\n\u003cp\u003eThese white High-Density Polyethylene screw caps from Caplugs® Evergreen are designed to seal 15 mL centrifuge tubes and 7 mL transport vials with a leak-free threaded engagement that meets IATA P650 requirements for biological specimen transport. Supplied non-sterile in 1000\/Bag, they are rated for cryogenic storage at -20°C and -80°C as well as autoclave sterilization at 121°C, making them suitable across the full lifecycle of a clinical or biorepository specimen — from collection through archival freezing. The white surface provides maximum contrast for adhesive barcode labels and LIS-printed identification, a practical advantage in high-throughput reference and clinical laboratory environments.\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\u003e300-3010-W2N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Type\u003c\/td\u003e\n\u003ctd\u003eScrew cap — threaded engagement\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\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Compatibility\u003c\/td\u003e\n\u003ctd\u003e15 mL centrifuge tubes; 240-3007 \/ 240-3010 7 mL transport vials (Caplugs® Evergreen)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIATA P650 Compliance\u003c\/td\u003e\n\u003ctd\u003eYes — leak-free primary container seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCryogenic Storage\u003c\/td\u003e\n\u003ctd\u003eCompatible — -20°C and -80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoclave Compatibility\u003c\/td\u003e\n\u003ctd\u003eCompatible — 121°C \/ 15 psi\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\u003eBPA \/ Phthalates\u003c\/td\u003e\n\u003ctd\u003eBPA-free; no phthalate plasticizers\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\u003eCapping 15 mL centrifuge tubes for serum separation spins, where screw-thread engagement retains the cap through centrifuge forces\u003c\/li\u003e\n\u003cli\u003eSealing Caplugs® Evergreen 240-3007 and 240-3010 7 mL transport vials for IATA P650-compliant biological specimen shipment\u003c\/li\u003e\n\u003cli\u003eColor-coded specimen routing in multi-specimen batch workflows, following CLSI cap-color conventions for visual differentiation\u003c\/li\u003e\n\u003cli\u003eReplacement or supplemental caps for biorepository archive tubes stored at -20°C or -80°C through extended freeze-thaw cycling\u003c\/li\u003e\n\u003cli\u003eAutoclave sterilization of capped tubes at 121°C prior to use in sterile processing or controlled-environment workflows\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThese caps are validated for use with Caplugs® Evergreen 15 mL centrifuge tubes and the 240-3007 \/ 240-3010 family of 7 mL transport vials. The HDPE threaded geometry engages the standard 15 mL centrifuge tube neck to deliver a secure closure through centrifugation, cryogenic freezing, and autoclave cycles. Because thread dimensions can vary across tube manufacturers, Caplugs® Evergreen recommends confirming cap-to-tube thread fit with a sample set before committing to a bulk order — LabSupplies.com can facilitate a sample request before purchase.\u003c\/p\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 \/ serum \/ plasma\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort-chain alcohols (brief contact)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids (\u0026lt;10%)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDMSO (≤10%)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage at -20°C \/ -80°C\u003c\/td\u003e\n\u003ctd\u003eSuitable — HDPE maintains thread engagement through freeze-thaw cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoclave (121°C)\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConcentrated aromatic \/ chlorinated solvents\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 Caplugs® Evergreen caps are manufactured from BPA-free, phthalate-free HDPE resin under ISO quality management. The higher crystallinity of HDPE versus low-density polyethylene delivers the thread-wall rigidity needed for consistent torque engagement and cap retention across the full performance range — centrifugation, cryogenic archiving, and autoclave sterilization. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory; tiered volume pricing is available for clinical labs, hospital systems, and biorepository programs with high annual cap consumption.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these caps sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile in 1000\/Bag bulk packaging. If sterile caps are required for your workflow, autoclave compatibility at 121°C \/ 15 psi means they can be sterilized in-house prior to use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill these caps fit centrifuge tubes from other manufacturers?\u003c\/strong\u003e\u003cbr\u003eThese caps are validated for Caplugs® Evergreen 15 mL centrifuge tubes and 240-3007 \/ 240-3010 transport vials. Thread dimensions vary across tube brands, so it is strongly recommended to verify fit with a sample before placing a bulk order — contact LabSupplies.com to request samples.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy choose white caps over other colors in the 300-3010 range?\u003c\/strong\u003e\u003cbr\u003eWhite provides the highest-contrast background for adhesive barcode labels and LIS-printed specimen identification, making it the preferred choice for reference laboratories and biorepository programs where label readability and scanner reliability are critical to specimen routing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these caps be used for frozen specimen archiving at -80°C?\u003c\/strong\u003e\u003cbr\u003eYes. HDPE maintains its dimensional stability and thread engagement through repeated freeze-thaw cycles at -80°C, which is why this cap is suitable for long-term biorepository and biobank archival programs.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"15 mL Centrifuge Tube \u0026 Transport Vial Screw Caps — HDPE, White, 1000\/Bag\",\"sku\":\"300-3010-W2N\",\"mpn\":\"300-3010-W2N\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"High-Density Polyethylene (HDPE)\",\"color\":\"White\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"67.50\",\"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 caps sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile in 1000\/Bag bulk packaging. 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