{"product_id":"tube-caps-111671y","title":"Screw Caps for Microtubes, O-Ring Seal, PP — 6 Colors, 1000\/Case | Globe Scientific","description":"\u003ch1\u003eGlobe Scientific Screw Caps for Microtubes, O-Ring Seal, Polypropylene — 6 Colors, 1000\/Case\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eGlobe Scientific Screw Cap for Microtube with O-Ring\u003c\/strong\u003e delivers a secure, leak-resistant closure for microtube-based sample storage, cryogenic archiving, and color-coded specimen tracking. Molded from polypropylene with an integrated O-ring, each cap maintains a tight seal during freeze-thaw cycles and long-term biobanking. Six color options simplify sample sorting across busy bench and core-lab workflows.\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 for Microtube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\/Size\u003c\/td\u003e\n\u003ctd\u003eMicrotube screw cap with integrated O-ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (cap), elastomer O-ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure\/Cap\u003c\/td\u003e\n\u003ctd\u003eScrew thread with O-ring seal\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\u003eYellow\u003c\/td\u003e\n\u003ctd\u003e111671Y\u003c\/td\u003e\n\u003ctd\u003e$225.60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003ctd\u003e111671W\u003c\/td\u003e\n\u003ctd\u003e$225.60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003ctd\u003e111671R\u003c\/td\u003e\n\u003ctd\u003e$225.60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGreen\u003c\/td\u003e\n\u003ctd\u003e111671G\u003c\/td\u003e\n\u003ctd\u003e$225.60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003e111671C\u003c\/td\u003e\n\u003ctd\u003e$225.60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003ctd\u003e111671B\u003c\/td\u003e\n\u003ctd\u003e$225.60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLong-term biobanking and specimen archiving with leak-resistant sealing\u003c\/li\u003e\n\u003cli\u003eCryogenic sample storage through repeated freeze-thaw cycles\u003c\/li\u003e\n\u003cli\u003eColor-coded organization of patient, study, or assay groups\u003c\/li\u003e\n\u003cli\u003eSecure storage of DNA, RNA, and protein extracts\u003c\/li\u003e\n\u003cli\u003eAliquoting reagents and standards for downstream PCR and sequencing\u003c\/li\u003e\n\u003cli\u003eSample transport between satellite labs and central core facilities\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003elabsupplies.com is an authorized Globe Scientific dealer shipping from US inventory for fast fulfillment. Each case carries lot numbers, supporting sample traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact our procurement team for volume quotes across multiple color SKUs.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eDo these screw caps fit all Globe Scientific microtubes?\u003c\/h3\u003e\n\u003cp\u003eThese O-ring screw caps are designed to thread onto compatible Globe Scientific screw-top microtubes. Confirm your tube catalog number against thread format before ordering to ensure a correct seal match.\u003c\/p\u003e\n\u003ch3\u003eAre the caps supplied sterile?\u003c\/h3\u003e\n\u003cp\u003eNo, these caps are non-sterile as shipped. If your protocol requires sterility, validate autoclave or alternative sterilization parameters against polypropylene heat tolerance before use.\u003c\/p\u003e\n\u003ch3\u003eWhy choose an O-ring closure over a standard cap?\u003c\/h3\u003e\n\u003cp\u003eThe integrated O-ring forms a positive seal that resists leakage and sample evaporation, making it well suited to long-term storage and cryogenic freeze-thaw conditions where reliable closure integrity matters.\u003c\/p\u003e\n\u003ch3\u003eCan I order multiple colors on one purchase order?\u003c\/h3\u003e\n\u003cp\u003eYes. Each color is a separate SKU at $225.60 per case of 1000, and all six can be combined on a single order. Reach out for tiered institutional pricing across mixed-color quantities.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Globe Scientific Screw Cap for Microtube with O-Ring\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Globe Scientific\"},\n  \"description\": \"Polypropylene screw caps for microtubes with integrated O-ring seal, available in 6 colors, 1000 per case.\",\n  \"sku\": [\"111671Y\", \"111671W\", \"111671R\", \"111671G\", \"111671C\", \"111671B\"],\n  \"offers\": {\n    \"@type\": \"AggregateOffer\",\n    \"priceCurrency\": \"USD\",\n    \"lowPrice\": \"225.60\",\n    \"highPrice\": \"225.60\",\n    \"offerCount\": 6\n  }\n}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do these screw caps fit all Globe Scientific microtubes?\",\n      \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These O-ring screw caps are designed to thread onto compatible Globe Scientific screw-top microtubes. Confirm your tube catalog number against thread format before ordering to ensure a correct seal match.\"}\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are the caps supplied sterile?\",\n      \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No, these caps are non-sterile as shipped. 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