{"product_id":"caplugs-300-3010-r2n-hdpe-screw-cap-15ml-centrifuge-transport-vial-red","title":"15 mL Centrifuge Tubes, Screw Caps, HDPE, Red — 300-3010-R2N | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e15 mL Centrifuge Tube \u0026amp; Transport Vial Screw Caps — HDPE, Red, 1000\/Bag (300-3010-R2N)\u003c\/h2\u003e\n\u003cp\u003eThese red high-density polyethylene screw caps from Caplugs® Evergreen are designed to seal 15 mL centrifuge tubes and 7 mL transport vials (240-3007\/240-3010 family) with a leak-free threaded engagement meeting IATA P650 primary container requirements. Supplied non-sterile in 1000\/Bag, they support the full spectrum of clinical and biorepository workflows — from serum separation centrifugation through frozen archiving at -80°C and autoclave sterilization at 121°C. The red color follows the CLSI H3 convention for serum\/no-additive tube identification, enabling reliable visual specimen routing without additional labeling.\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-R2N\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\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Compatibility\u003c\/td\u003e\n\u003ctd\u003eCaplugs® Evergreen 15 mL centrifuge tubes; 240-3007 \/ 240-3010 7 mL transport vials\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 at -20°C and -80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoclave Compatibility\u003c\/td\u003e\n\u003ctd\u003e121°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\u003eBPA \/ Phthalates\u003c\/td\u003e\n\u003ctd\u003eBPA-free; no phthalate plasticizers\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\u003eSealing 15 mL centrifuge tubes through centrifuge runs for serum or plasma separation — threaded engagement retains the cap under centrifugation forces\u003c\/li\u003e\n\u003cli\u003eLeak-free primary closure for 7 mL transport vials (240-3007 \/ 240-3010) shipped under IATA P650 biological specimen transport regulations\u003c\/li\u003e\n\u003cli\u003eColor-coded specimen-type routing in clinical chemistry and immunoassay batch workflows, leveraging the CLSI H3 red-top convention for serum\/no-additive identification\u003c\/li\u003e\n\u003cli\u003eLong-term frozen archiving of biobank aliquots at -20°C and -80°C, where HDPE's higher crystallinity maintains consistent thread engagement through repeated freeze-thaw cycles\u003c\/li\u003e\n\u003cli\u003eReplacement or color-differentiated capping for existing Caplugs® Evergreen 15 mL tube inventories in multi-specimen collection programs\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, serum, plasma\u003c\/td\u003e\n\u003ctd\u003eExcellent\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\u003eShort-chain alcohols (brief contact)\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 cryo stability\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoclave (121°C \/ 15 psi)\u003c\/td\u003e\n\u003ctd\u003eCompatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConcentrated organic solvents (chloroform, acetone, aromatic hydrocarbons)\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 9001 quality management. HDPE's elevated crystallinity versus low-density polyethylene delivers the thread-wall rigidity required for consistent torque engagement and cap retention across centrifugation, cryogenic archiving, and autoclave sterilization cycles. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from domestic inventory, typically same business day for stocking items. Tiered pricing and sample requests are available for institutional, hospital, and biorepository procurement programs — always validate cap-to-tube thread fit with a sample before committing to bulk purchase.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these caps certified for shipping biological specimens?\u003c\/strong\u003e\u003cbr\u003eYes — the threaded screw engagement on part number 300-3010-R2N meets IATA P650 requirements for leak-free primary container closure, making these caps appropriate for regulated biological specimen transport when used with a compatible tube.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these caps be autoclaved along with the tubes?\u003c\/strong\u003e\u003cbr\u003eYes. HDPE is compatible with standard autoclave conditions at 121°C \/ 15 psi, so caps and tubes can be sterilized together as assembled units when sterile processing is required for your workflow.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill these caps fit tubes from other manufacturers?\u003c\/strong\u003e\u003cbr\u003eThey are validated for Caplugs® Evergreen 15 mL centrifuge tubes and 240-3007 \/ 240-3010 transport vials. Thread pitch and neck dimensions vary by manufacturer, so it is strongly recommended to request a free sample and verify fit before switching from an existing OEM cap supply.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy are the caps red rather than a neutral color?\u003c\/strong\u003e\u003cbr\u003eRed follows the CLSI H3 convention for serum\/no-additive tube identification — the same color designation used on red-top blood collection tubes. Using matching cap colors on 15 mL centrifuge tubes and transport vials lets clinical and research staff route serum-containing specimens by visual inspection without relying solely on written labels.\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, Red, 1000\/Bag\",\"sku\":\"300-3010-R2N\",\"mpn\":\"300-3010-R2N\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"High-Density Polyethylene (HDPE)\",\"color\":\"Red\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"67.50\",\"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 caps certified for shipping biological specimens?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes — the threaded screw engagement meets IATA P650 requirements for leak-free primary container closure, making these caps appropriate for regulated biological specimen transport when used with a compatible tube.\"}},{\"@type\":\"Question\",\"name\":\"Can these caps be autoclaved along with the tubes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. 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