{"product_id":"214-2012-010-round-bottom-test-tube","title":"Round Bottom Test Tubes, 5 mL, 12 x 75 mm, Polystyrene, Natural, 1000\/Bag | Caplugs® Evergreen","description":"\u003ch1\u003eCaplugs® Evergreen 5 mL Round Bottom Test Tubes, 12 x 75 mm, Polystyrene, Natural, 1000\/Bag\u003c\/h1\u003e\n\u003cp\u003eThese \u003cstrong\u003e5 mL round bottom test tubes\u003c\/strong\u003e are molded from optically clear polystyrene in a standard 12 x 75 mm format, making them a workhorse for flow cytometry sample prep, manual immunoassays, and routine reagent aliquoting. Natural-tinted walls allow clear visual inspection of pellets, precipitates, and color reactions at the bench.\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\u003eRound Bottom Test Tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\/Size\u003c\/td\u003e\n\u003ctd\u003e5.0 mL, 12 x 75 mm\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\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\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\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFlow cytometry sample loading and staining workflows\u003c\/li\u003e\n\u003cli\u003eManual ELISA and immunoassay reagent handling\u003c\/li\u003e\n\u003cli\u003eSerial dilution and titration series at the bench\u003c\/li\u003e\n\u003cli\u003eSample collection and short-term aliquot storage\u003c\/li\u003e\n\u003cli\u003eHematology and clinical chemistry reagent transfer\u003c\/li\u003e\n\u003cli\u003eGeneral-purpose tube for educational and research labs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003ePurchase with confidence from labsupplies.com, an authorized Caplugs® Evergreen dealer shipping from US inventory. Each bag carries lot numbers to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. These tubes are Made in USA, and institutional and grant-funded tiered pricing is available on request.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eAre these 12 x 75 mm tubes compatible with flow cytometers?\u003c\/h3\u003e\n\u003cp\u003eThe 12 x 75 mm round bottom format is the industry-standard footprint for most flow cytometry sample loaders. Verify your specific instrument's tube holder dimensions before use, as we do not certify named instrument compatibility.\u003c\/p\u003e\n\u003ch3\u003eAre these test tubes sterile?\u003c\/h3\u003e\n\u003cp\u003eNo. These tubes are supplied non-sterile, which suits routine reagent handling, dilutions, and general bench work. For applications requiring sterility, the tubes should be autoclaved only if compatible — note polystyrene is not autoclavable.\u003c\/p\u003e\n\u003ch3\u003eCan polystyrene tubes be autoclaved?\u003c\/h3\u003e\n\u003cp\u003ePolystyrene is not suitable for autoclaving and will deform under standard steam sterilization temperatures. Choose these tubes for ambient and refrigerated workflows; select a polypropylene tube if heat sterilization is required.\u003c\/p\u003e\n\u003ch3\u003eHow many tubes come in a pack and is bulk pricing offered?\u003c\/h3\u003e\n\u003cp\u003eEach pack contains 1000 tubes per bag. Institutional and grant-funded tiered pricing is available for higher volumes — contact labsupplies.com for a quote.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Caplugs® Evergreen 5 mL Round Bottom Test Tubes, 12 x 75 mm, Polystyrene, Natural, 1000\/Bag\",\n  \"sku\": \"214-2012-010\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Caplugs® Evergreen\"\n  },\n  \"countryOfOrigin\": \"USA\",\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/labsupplies.com\/products\/214-2012-010\",\n    \"priceCurrency\": \"USD\",\n    \"price\": \"63.50\",\n    \"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    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these 12 x 75 mm tubes compatible with flow cytometers?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 12 x 75 mm round bottom format is the industry-standard footprint for most flow cytometry sample loaders. 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Choose these tubes for ambient and refrigerated workflows; select a polypropylene tube if heat sterilization is required.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How many tubes come in a pack and is bulk pricing offered?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Each pack contains 1000 tubes per bag. Institutional and grant-funded tiered pricing is available for higher volumes — contact labsupplies.com for a quote.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48555981308136,"sku":"2142012010E1","price":63.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/214-2012-010_02_e0fc9d0a-1314-4fd6-84ce-c709c9f6fc36.jpg?v=1778724509","url":"https:\/\/labsupplies.com\/products\/214-2012-010-round-bottom-test-tube","provider":"LabSupplies.com","version":"1.0","type":"link"}