{"product_id":"freestanding-centrifuge-tubes-50ml-blue-caps-ppc-2403550b80e1","title":"50 mL Centrifuge Tubes, Freestanding, PPC, Blue — 240-3550-B80 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e50 mL Freestanding Centrifuge Tubes, Polypropylene Copolymer, Blue Cap — 240-3550-B80 | 1000\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese 50 mL freestanding centrifuge tubes from Caplugs® Evergreen are constructed from Polypropylene Copolymer (PPC), rated to 10,000 × g, and supplied non-sterile in a bulk 1000\/Bag unassembled format for high-volume laboratory procurement. A flat-bottom freestanding base eliminates the need for a tube rack during benchtop processing, and molded-in graduations at every 5 mL provide reliable volume reference during sample preparation and aliquoting. The blue cap enables color-coded tube identification and supports multi-category batch management in clinical, research, and diagnostic settings.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e240-3550-B80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e50 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Centrifuge Capacity\u003c\/td\u003e\n\u003ctd\u003e10,000 × g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduations\u003c\/td\u003e\n\u003ctd\u003eMolded-in, every 5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene Copolymer (PPC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase Style\u003c\/td\u003e\n\u003ctd\u003eFreestanding Flat Bottom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Color\u003c\/td\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Body Color\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\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eUnassembled\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\u003eBPA \/ Phthalate Free\u003c\/td\u003e\n\u003ctd\u003eYes\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\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLarge-volume centrifugation in clinical chemistry, molecular diagnostics, and microbiology workflows requiring up to 10,000 × g\u003c\/li\u003e\n\u003cli\u003eNucleic acid extraction (DNA\/RNA) where chemical resistance to alcohols and common extraction reagents is essential\u003c\/li\u003e\n\u003cli\u003eCell culture, protein purification, and reagent preparation requiring a stable 50 mL vessel\u003c\/li\u003e\n\u003cli\u003eFreestanding benchtop specimen staging, aliquoting, and short-term storage without external rack infrastructure\u003c\/li\u003e\n\u003cli\u003eColor-coded sample batch management using cap color to distinguish specimen categories or processing runs\u003c\/li\u003e\n\u003cli\u003eCAP-, CLIA-, and ISO 15189-compliant workflows supported by lot-numbered, traceable consumables\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline \/ water\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\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlcohols (ethanol, isopropanol)\u003c\/td\u003e\n\u003ctd\u003eGood — suitable for extraction protocols\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKetones (acetone)\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact; verify for extended exposure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eLimited — not recommended for prolonged contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoclave \/ steam sterilization\u003c\/td\u003e\n\u003ctd\u003eCompatible (polypropylene base resin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen centrifuge tubes are manufactured from BPA-free, phthalate-free Polypropylene Copolymer resin and are lot-numbered to support traceability requirements in CAP-, CLIA-, and ISO 15189-accredited laboratories. The unassembled 1000\/Bag format reduces packaging footprint and per-unit cost, making it an efficient choice for high-throughput facilities with consistent 50 mL tube demand. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with institutional and volume pricing available for clinical labs, research institutions, and biotech procurement teams.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these centrifuge tubes sterile?\u003c\/strong\u003e\u003cbr\u003eNo — part number 240-3550-B80 is supplied non-sterile. For workflows requiring sterile 50 mL tubes, a sterile-certified product should be selected instead.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does \"unassembled\" mean for this product?\u003c\/strong\u003e\u003cbr\u003eUnassembled means the blue caps and tube bodies are packaged separately within the bag and are not pre-attached at the time of shipment. This format reduces shipping volume and allows labs to cap tubes at the point of use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo these tubes require a rack to stand upright?\u003c\/strong\u003e\u003cbr\u003eNo — the flat-bottom freestanding base allows the tubes to stand independently on any level benchtop surface, eliminating the need for a tube rack during centrifuge staging, aliquoting, or storage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the significance of the blue cap color?\u003c\/strong\u003e\u003cbr\u003eBlue caps allow for visual color-coding in multi-tube laboratory workflows, making it straightforward to distinguish specimen categories, processing batches, or reagent types at a glance without additional labeling.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"50 mL Freestanding Centrifuge Tubes, Polypropylene Copolymer, Blue Cap, Non-Sterile — 1000\/Bag\",\"sku\":\"2403550B80E1\",\"mpn\":\"240-3550-B80\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Blue Cap \/ Natural Body\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"261.04\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Are these centrifuge tubes sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — part number 240-3550-B80 is supplied non-sterile. 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