{"product_id":"214-2311-03n-calibrated-round-bottom-tube","title":"Round Bottom Test Tubes, 5 mL Calibrated, 13 x 75 mm, PP, Natural, 500\/Bag | Caplugs® Evergreen","description":"\u003ch1\u003eCaplugs® Evergreen 5 mL Calibrated Round Bottom Test Tubes, 13 x 75 mm, Polypropylene, Natural, 500\/Bag\u003c\/h1\u003e\n\u003cp\u003eThese \u003cstrong\u003e5.0 mL calibrated round bottom test tubes\u003c\/strong\u003e are molded from polypropylene (PP) in a natural, semi-translucent finish for routine sample handling, reagent aliquoting, and benchtop dilutions. The 13 x 75 mm footprint fits standard tube racks and many tabletop centrifuge rotors, making them a versatile workhorse across clinical, research, and teaching 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\u003eCalibrated Round 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, 13 x 75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduation\u003c\/td\u003e\n\u003ctd\u003eCalibrated (graduated)\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\u003e500\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin: USA\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\u003eReagent and buffer aliquoting at the bench\u003c\/li\u003e\n\u003cli\u003eSerial dilutions and sample preparation\u003c\/li\u003e\n\u003cli\u003eShort-spin pelleting in tabletop centrifuges accepting 13 x 75 mm tubes\u003c\/li\u003e\n\u003cli\u003eSpecimen collection and routine sample transfer\u003c\/li\u003e\n\u003cli\u003eEducational and teaching lab exercises\u003c\/li\u003e\n\u003cli\u003eGeneral storage of non-corrosive liquids and solutions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003elabsupplies.com is an authorized Caplugs® Evergreen dealer shipping from US inventory, and these tubes are Made in USA. Bags carry lot numbers so traceability is straightforward for CAP-, CLIA-, and ISO 15189-accredited workflows. Institutional and grant-funded tiered pricing is available — contact us for volume quotes on multi-bag orders.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eAre these test tubes sterile?\u003c\/h3\u003e\n\u003cp\u003eNo. These tubes ship non-sterile and are intended for general laboratory use. If your protocol requires sterility, the tubes can be autoclaved; validate parameters against your own sterilization equipment before use.\u003c\/p\u003e\n\u003ch3\u003eCan polypropylene tubes be autoclaved?\u003c\/h3\u003e\n\u003cp\u003eYes. Polypropylene tolerates standard steam autoclaving at 121 °C. Confirm cycle time and load configuration with your facility's procedures, as repeated cycles may affect tube clarity over time.\u003c\/p\u003e\n\u003ch3\u003eWill 13 x 75 mm tubes fit standard racks and centrifuges?\u003c\/h3\u003e\n\u003cp\u003eThe 13 x 75 mm dimension is a widely used industry format compatible with most standard 13 mm tube racks and many tabletop centrifuge rotors. Check your rotor's tube specification to confirm fit and rated speed.\u003c\/p\u003e\n\u003ch3\u003eDo these tubes include caps?\u003c\/h3\u003e\n\u003cp\u003eNo closure is listed in the specification; these are supplied as open round bottom tubes. Compatible 13 mm closures may be ordered separately if your application requires sealing.\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 Calibrated Round Bottom Test Tubes, 13 x 75 mm, Polypropylene, Natural, 500\/Bag\",\n  \"sku\": \"214-2311-03N\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Caplugs® Evergreen\"\n  },\n  \"countryOfOrigin\": \"USA\",\n  \"material\": \"Polypropylene (PP)\",\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/labsupplies.com\",\n    \"priceCurrency\": \"USD\",\n    \"price\": \"46.05\",\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 test tubes sterile?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. These tubes ship non-sterile and are intended for general laboratory use. If your protocol requires sterility, the tubes can be autoclaved; validate parameters against your own sterilization equipment before use.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can polypropylene tubes be autoclaved?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Polypropylene tolerates standard steam autoclaving at 121 °C. Confirm cycle time and load configuration with your facility's procedures, as repeated cycles may affect tube clarity over time.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will 13 x 75 mm tubes fit standard racks and centrifuges?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 13 x 75 mm dimension is a widely used industry format compatible with most standard 13 mm tube racks and many tabletop centrifuge rotors. Check your rotor's tube specification to confirm fit and rated speed.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do these tubes include caps?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No closure is listed in the specification; these are supplied as open round bottom tubes. Compatible 13 mm closures may be ordered separately if your application requires sealing.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48558245445864,"sku":"214231103NE1","price":46.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/214-2311-03N_02_08e3d51b-e5e1-48fa-8542-4359c2561f0f.jpg?v=1778766037","url":"https:\/\/labsupplies.com\/products\/214-2311-03n-calibrated-round-bottom-tube","provider":"LabSupplies.com","version":"1.0","type":"link"}