{"product_id":"caplugs-300-3022-r20-transport-vial-15-ml-centrifuge-tube-screw-caps","title":"15 mL Centrifuge Tubes, HDPE, Red — 300-3022-R20 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e15 mL Centrifuge Tube Screw Caps with Sprockets — HDPE, Red, Non-Sterile, 1000\/Bag (300-3022-R20)\u003c\/h2\u003e\n\u003cp\u003eDesigned for use on 15 mL centrifuge tubes and transport vials, these screw caps feature a sprocket-edge design that provides a secure grip for easy hand-tightening and removal, even with gloved hands. Molded from high-density polyethylene (HDPE), part number 300-3022-R20 delivers reliable chemical resistance and a durable, leak-resistant seal for routine sample storage and transport. Supplied non-sterile in bulk (1000\/Bag), the red color enables straightforward tube identification and color-coded workflow organization.\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\u003e300-3022-R20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eTransport Vial \/ 15 mL Centrifuge Tube Screw Cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign\u003c\/td\u003e\n\u003ctd\u003eSprocket Edge\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\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\u003eRecapping 15 mL centrifuge tubes for sample storage and transport\u003c\/li\u003e\n\u003cli\u003eColor-coded tube identification in multi-sample or multi-study workflows\u003c\/li\u003e\n\u003cli\u003eReplacement caps for transport vials in clinical and research settings\u003c\/li\u003e\n\u003cli\u003eBulk capping operations where high cap counts are required\u003c\/li\u003e\n\u003cli\u003eGeneral specimen and reagent containment in laboratory and field collection environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMaterial \u0026amp; Chemical Resistance\u003c\/h2\u003e\n\u003cp\u003eHigh-density polyethylene (HDPE) offers broad resistance to aqueous solutions, dilute acids and bases, and many common laboratory reagents, making it a practical choice for general-purpose tube capping. HDPE is more rigid than low-density polyethylene and maintains its shape under normal laboratory handling. Note that HDPE is not recommended for autoclaving and may be affected by strong oxidizing acids, aromatic solvents, and halogenated solvents; confirm compatibility when working with aggressive chemical matrices.\u003c\/p\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, Caplugs® Evergreen screw caps are manufactured under ISO 9001 quality management from BPA-free, phthalate-free, latex-free 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 caps sterile?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4\"\u003eNo — they are supplied non-sterile in 1000\/Bag bulk packaging, suitable for general laboratory and transport applications where sterility is not required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the purpose of the sprocket edge design?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4\"\u003eThe sprocket (knurled) edge provides additional grip around the circumference of the cap, making it easier to achieve a secure, hand-tight seal — particularly when wearing gloves or handling multiple tubes rapidly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan HDPE caps be autoclaved?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4\"\u003eHDPE is generally not recommended for autoclaving. If sterile caps are needed, consider a sterilization method compatible with polyethylene, or select a cap product supplied sterile.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"15 mL Centrifuge Tube Screw Caps with Sprockets, HDPE, Red, Non-Sterile, 1000\/Bag\",\"sku\":\"3003022R20E1\",\"mpn\":\"300-3022-R20\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"High-Density Polyethylene (HDPE)\",\"color\":\"Red\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"70.32\",\"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 sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile in 1000\/Bag bulk packaging, suitable for general laboratory and transport applications where sterility is not required.\"}},{\"@type\":\"Question\",\"name\":\"What is the purpose of the sprocket edge design?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The sprocket (knurled) edge provides additional grip around the circumference of the cap, making it easier to achieve a secure, hand-tight seal — particularly when wearing gloves or handling multiple tubes rapidly.\"}},{\"@type\":\"Question\",\"name\":\"Can HDPE caps be autoclaved?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"HDPE is generally not recommended for autoclaving. 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