{"product_id":"tube-caps-6137y","title":"Screw Caps with Silicone Washer for External-Thread Sample Tubes (6030-6059), PP — 7 Colors, 1000\/Case | Globe Scientific","description":"\u003ch2\u003eScrew Caps with Silicone Washer for External-Thread Sample Tubes (6030-6059), Polypropylene, 7 Colors, 1000\/Case\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eScrew Cap with Silicone Washer for Sample Tubes with External Threads\u003c\/strong\u003e seals Globe Scientific sample tubes #6030–6059 with a dependable leak barrier for sample archiving, aliquot storage, and biobanking. Color coding speeds rack identification and workflow segregation, while the integrated washer maintains closure integrity through freeze-thaw handling.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eScrew cap with silicone washer (for external-thread tubes #6030–6059)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\/Size\u003c\/td\u003e\n\u003ctd\u003eFits external-thread sample tubes #6030–6059\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene cap with silicone sealing washer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure\/Cap\u003c\/td\u003e\n\u003ctd\u003eScrew cap, external-thread compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduation\u003c\/td\u003e\n\u003ctd\u003eNot applicable\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 caps per case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eAvailable Colors\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003ePrice (per case of 1000)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYellow — Bag of 1000\u003c\/td\u003e\n\u003ctd\u003e6137Y\u003c\/td\u003e\n\u003ctd\u003e$308.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRed — Bag of 1000\u003c\/td\u003e\n\u003ctd\u003e6137R\u003c\/td\u003e\n\u003ctd\u003e$308.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrange — Bag of 1000\u003c\/td\u003e\n\u003ctd\u003e6137N\u003c\/td\u003e\n\u003ctd\u003e$308.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLilac — Bag of 1000\u003c\/td\u003e\n\u003ctd\u003e6137L\u003c\/td\u003e\n\u003ctd\u003e$308.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGreen — Bag of 1000\u003c\/td\u003e\n\u003ctd\u003e6137G\u003c\/td\u003e\n\u003ctd\u003e$308.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlue — Bag of 1000\u003c\/td\u003e\n\u003ctd\u003e6137B\u003c\/td\u003e\n\u003ctd\u003e$308.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGray — Bag of 1000\u003c\/td\u003e\n\u003ctd\u003e6137A\u003c\/td\u003e\n\u003ctd\u003e$308.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLong-term sample archiving in freezer racks and storage boxes\u003c\/li\u003e\n\u003cli\u003eColor-coded aliquot organization by study, patient, or assay type\u003c\/li\u003e\n\u003cli\u003eBiobanking and biorepository specimen storage\u003c\/li\u003e\n\u003cli\u003eSecure sealing of buffers, reagents, and extracts for transport\u003c\/li\u003e\n\u003cli\u003eSerum, plasma, and DNA\/RNA sample retention\u003c\/li\u003e\n\u003cli\u003eQuality-control retain sample programs requiring visual sorting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eReagent Class\u003c\/td\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlcohols\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eLimited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003ePurchase from labsupplies.com, an authorized Globe Scientific dealer shipping from US inventory. Each case carries lot numbers supporting traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available for volume orders and standing requisitions.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhich tubes do these caps fit?\u003c\/h3\u003e\n\u003cp\u003eThese caps are designed for Globe Scientific sample tubes with external threads in the #6030–6059 series. Confirm your tube catalog number against that range before ordering.\u003c\/p\u003e\n\u003ch3\u003eWhy is a silicone washer included?\u003c\/h3\u003e\n\u003cp\u003eThe silicone washer compresses against the tube rim to form a tighter seal, reducing leakage and evaporation during storage, transport, and freeze-thaw cycles.\u003c\/p\u003e\n\u003ch3\u003eHow many caps come in each pack?\u003c\/h3\u003e\n\u003cp\u003eEach unit ships as a case of 1000 caps at the listed per-case price. All seven colors are sold in the same 1000-count case format.\u003c\/p\u003e\n\u003ch3\u003eAre these caps suitable for cryogenic storage?\u003c\/h3\u003e\n\u003cp\u003eThe polypropylene construction tolerates standard freezer storage. Verify the rated temperature range of your matched tube series for ultra-low or liquid-nitrogen applications.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Screw Cap with Silicone Washer for Sample Tubes with External Threads (6030-6059)\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Globe Scientific\"},\n  \"description\": \"Polypropylene screw caps with silicone washer for external-thread sample tubes #6030-6059. 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