{"product_id":"caplugs-300-3531-k20-slide-fix-pap-jar-screw-caps","title":"Lab Vial Caps, HDPE \u0026 PP — 2 Materials, 100–1000\/Bag | Caplugs® Evergreen","description":"\u003ch1\u003eCaplugs® Evergreen Lab Caps, HDPE \u0026amp; PP — 2 Materials, 100\/Bag \u0026amp; 1000\/Bag\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eCaplugs® Evergreen Lab Caps\u003c\/strong\u003e deliver dependable closure performance across two material grades for routine sample storage, specimen transport, and reagent containment. Choose HDPE for moisture-resistant bulk runs or PP for higher chemical tolerance, both engineered for consistent fit on standard laboratory vials and containers.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eLaboratory closure caps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\/Format\u003c\/td\u003e\n\u003ctd\u003eTwo part-specific cap formats (300-3531-K20, 240-3800-K30)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHDPE (high-density polyethylene) or PP (polypropylene)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure\/Cap\u003c\/td\u003e\n\u003ctd\u003ePush-fit \/ snap closure\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\u003eHDPE: 1000\/bag · PP: 100\/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\/table\u003e\n\n\u003ch2\u003eAvailable Materials\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eHDPE — 1000\/Bag\u003c\/td\u003e\n\u003ctd\u003e3003531K20E1\u003c\/td\u003e\n\u003ctd\u003e$101.93\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePP — 100\/Bag\u003c\/td\u003e\n\u003ctd\u003e2403800K30E1\u003c\/td\u003e\n\u003ctd\u003e$40.48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSealing sample and specimen vials for cold or ambient storage\u003c\/li\u003e\n\u003cli\u003eClosing reagent containers to limit evaporation and contamination\u003c\/li\u003e\n\u003cli\u003eSecuring tubes during transport between bench and storage areas\u003c\/li\u003e\n\u003cli\u003eArchiving aliquots in biorepository and biobank workflows\u003c\/li\u003e\n\u003cli\u003eCapping containers in clinical and diagnostic specimen handling\u003c\/li\u003e\n\u003cli\u003eProtecting fill openings in QC and stability-testing operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eManufactured in the USA and supplied through labsupplies.com, an authorized Caplugs® Evergreen dealer shipping from US inventory. Each bag carries lot numbers that support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available on request for high-volume procurement.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the difference between the HDPE and PP caps?\u003c\/h3\u003e\n\u003cp\u003eHDPE offers strong moisture resistance and ships in a 1000\/bag bulk format, while PP provides broader chemical tolerance and ships in a 100\/bag format. Material choice should match your reagent and storage conditions.\u003c\/p\u003e\n\u003ch3\u003eHow are these caps packaged?\u003c\/h3\u003e\n\u003cp\u003eThe HDPE cap (300-3531-K20) is sold 1000 per bag; the PP cap (240-3800-K30) is sold 100 per bag. Prices listed are per-pack.\u003c\/p\u003e\n\u003ch3\u003eAre the caps supplied sterile?\u003c\/h3\u003e\n\u003cp\u003eNo. These caps ship non-sterile. Users requiring sterile conditions should validate an appropriate in-house sterilization or decontamination method for the chosen material.\u003c\/p\u003e\n\u003ch3\u003eCan these caps support accredited-lab traceability?\u003c\/h3\u003e\n\u003cp\u003eYes. Each bag carries a lot number, enabling documentation for CAP-, CLIA-, and ISO 15189-accredited environments where traceability of consumables is required.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Caplugs® Evergreen Lab Caps, HDPE \u0026 PP\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Caplugs® Evergreen\"},\n  \"countryOfOrigin\": \"USA\",\n  \"offers\": [\n    {\"@type\": \"Offer\", \"sku\": \"3003531K20E1\", \"price\": \"101.93\", \"priceCurrency\": \"USD\", \"availability\": \"https:\/\/schema.org\/InStock\"},\n    {\"@type\": \"Offer\", \"sku\": \"2403800K30E1\", \"price\": \"40.48\", \"priceCurrency\": \"USD\", \"availability\": \"https:\/\/schema.org\/InStock\"}\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    {\"@type\": \"Question\", \"name\": \"What is the difference between the HDPE and PP caps?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"HDPE offers strong moisture resistance and ships in a 1000\/bag bulk format, while PP provides broader chemical tolerance and ships in a 100\/bag format. Material choice should match your reagent and storage conditions.\"}},\n    {\"@type\": \"Question\", \"name\": \"How are these caps packaged?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The HDPE cap (300-3531-K20) is sold 1000 per bag; the PP cap (240-3800-K30) is sold 100 per bag. Prices listed are per-pack.\"}},\n    {\"@type\": \"Question\", \"name\": \"Are the caps supplied sterile?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. These caps ship non-sterile. Users requiring sterile conditions should validate an appropriate in-house sterilization or decontamination method for the chosen material.\"}},\n    {\"@type\": \"Question\", \"name\": \"Can these caps support accredited-lab traceability?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Each bag carries a lot number, enabling documentation for CAP-, CLIA-, and ISO 15189-accredited environments where traceability of consumables is required.\"}}\n  ]\n}\n\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"HDPE","offer_id":48644935713000,"sku":"3003531K20E1","price":101.93,"currency_code":"USD","in_stock":true},{"title":"PP","offer_id":48644935745768,"sku":"2403800K30E1","price":40.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/300-3532-K20_17287fdb-8499-49e8-80e7-2bd5cfce6f27.png?v=1779410282","url":"https:\/\/labsupplies.com\/products\/caplugs-300-3531-k20-slide-fix-pap-jar-screw-caps","provider":"LabSupplies.com","version":"1.0","type":"link"}