{"product_id":"222-2448-g50-sterile-conical-centrifuge-tube","title":"15 mL Conical Centrifuge Tubes, Polystyrene, Sterile, Natural with Green Caps, 50\/Tray (500\/Pack) | Caplugs® Evergreen","description":"\u003ch1\u003eCaplugs® Evergreen 15 mL Conical Centrifuge Tubes, Sterile Polystyrene (PS), Natural with Green Caps — 50\/Tray, 500\/Pack\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eCaplugs® Evergreen 15 mL Conical Centrifuge Tubes\u003c\/strong\u003e deliver clear polystyrene (PS) clarity and sterile, racked convenience for sample collection, cell pelleting, and reagent aliquoting. Each natural-color conical vessel pairs with a leak-resistant green screw cap, supplied assembled and ready to load. Trays of 50 streamline bench workflows in clinical, research, and QC labs.\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\u003eConical Centrifuge Tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\/Size\u003c\/td\u003e\n\u003ctd\u003e15 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolystyrene (PS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure\/Cap\u003c\/td\u003e\n\u003ctd\u003eGreen Screw Cap, assembled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural vessel with green cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eSterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e50\/Tray (500\/Pack)\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\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCell pelleting and resuspension in mammalian and microbial culture workflows\u003c\/li\u003e\n\u003cli\u003eSample collection, transport, and short-term storage of biological specimens\u003c\/li\u003e\n\u003cli\u003eReagent and buffer aliquoting for assay setup\u003c\/li\u003e\n\u003cli\u003eProtein and nucleic acid preparation steps requiring optical clarity\u003c\/li\u003e\n\u003cli\u003eClinical and diagnostic specimen processing in CLIA-regulated settings\u003c\/li\u003e\n\u003cli\u003eGeneral benchtop centrifugation up to validated rated g-forces\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 (Polystyrene)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers and saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids and bases\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlcohols (ethanol, isopropanol)\u003c\/td\u003e\n\u003ctd\u003eLimited — may cause crazing with prolonged exposure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKetones (acetone)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic and chlorinated solvents\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAldehydes (formalin, dilute)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003elabsupplies.com is an authorized Caplugs® Evergreen dealer shipping from US inventory, with these tubes proudly Made in USA. Each tray and case carries lot numbers that support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact our team for volume quotes on standing orders.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eAre these 15 mL conical tubes made of polystyrene or polypropylene?\u003c\/h3\u003e\n\u003cp\u003eThese tubes are molded from polystyrene (PS), giving high optical clarity for visual inspection of pellets and contents. Note that PS has different chemical and centrifugation tolerances than polypropylene, so verify suitability for your solvents and rated speeds.\u003c\/p\u003e\n\u003ch3\u003eAre the tubes supplied sterile and assembled with caps?\u003c\/h3\u003e\n\u003cp\u003eYes. Each tube ships sterile with its green screw cap assembled and ready to use, packaged 50 per tray and 500 per pack for organized loading at the bench.\u003c\/p\u003e\n\u003ch3\u003eWhat does 50\/Tray, 500\/Pack mean for ordering?\u003c\/h3\u003e\n\u003cp\u003eThe unit of sale is one pack of 500 tubes, organized into trays of 50. The listed price is per pack of 500.\u003c\/p\u003e\n\u003ch3\u003eCan these tubes be used with organic solvents?\u003c\/h3\u003e\n\u003cp\u003ePolystyrene tolerates aqueous buffers and dilute acids\/bases well but is not recommended for ketones, aromatic, or chlorinated solvents. Review the chemical resistance table and validate for your specific protocol before use.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"15 mL Conical Centrifuge Tubes, Sterile Polystyrene (PS), Natural with Green Caps, 50\/Tray (500\/Pack)\",\n  \"sku\": \"222-2448-G50\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Caplugs® Evergreen\"\n  },\n  \"countryOfOrigin\": \"USA\",\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"priceCurrency\": \"USD\",\n    \"price\": \"231.47\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"labsupplies.com\"\n    }\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\": \"Are these 15 mL conical tubes made of polystyrene or polypropylene?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These tubes are molded from polystyrene (PS), giving high optical clarity for visual inspection of pellets and contents. 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