{"product_id":"freestanding-centrifuge-tubes-50ml-red-caps-ppc-non-sterile-1000-bag-unassembled-caplugs-evergreen-2403550r80e1","title":"50 mL Centrifuge Tubes, Freestanding, PPC, Red — 240-3550-R80 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e50 mL Freestanding Centrifuge Tubes, Polypropylene Copolymer, Red Cap — 240-3550-R80 | 1000\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese 50 mL freestanding centrifuge tubes from Caplugs® Evergreen are constructed from Polypropylene Copolymer (PPC) and supplied non-sterile, unassembled, 1000\/Bag for high-volume laboratory procurement. Rated to 10,000 × g, they support demanding centrifugation workflows in clinical, research, and diagnostic settings. The red screw cap enables immediate color-coded tube identification, while the freestanding flat-bottom base allows stable bench-top placement without a rack.\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-R80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Type\u003c\/td\u003e\n\u003ctd\u003eFreestanding Centrifuge Tube\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 RCF\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\u003eCap Color\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Body Color\u003c\/td\u003e\n\u003ctd\u003eNatural (clear)\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\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\u003eHigh-speed centrifugation up to 10,000 × g in clinical chemistry, molecular diagnostics, and microbiology workflows\u003c\/li\u003e\n\u003cli\u003eNucleic acid (DNA\/RNA) extraction requiring a chemically resistant, large-volume tube\u003c\/li\u003e\n\u003cli\u003eCell culture harvesting, protein purification, and biological sample concentration\u003c\/li\u003e\n\u003cli\u003eLarge-volume specimen collection, aliquoting, and storage where freestanding stability eliminates the need for a separate rack\u003c\/li\u003e\n\u003cli\u003eColor-coded batch and priority management in multi-cap-color laboratory systems — red caps designate specific sample categories at a glance\u003c\/li\u003e\n\u003cli\u003eEnvironmental and industrial lab sample processing requiring a 50 mL format\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 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\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlcohols (ethanol, isopropanol)\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKetones (acetone)\u003c\/td\u003e\n\u003ctd\u003eLimited — short-term contact only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\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 sterilization\u003c\/td\u003e\n\u003ctd\u003eNot applicable — supplied non-sterile; confirm suitability before autoclaving\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. LabSupplies.com is an authorized dealer of Caplugs® Evergreen consumables and ships from USA inventory, with tiered volume pricing available for institutional, hospital, and grant-funded accounts. The unassembled 1000\/Bag format maximizes storage efficiency and minimizes per-unit cost for high-throughput facilities.\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-R80 is supplied non-sterile and unassembled. For workflows requiring sterility, confirm whether your process includes a downstream sterilization step, or contact us about sterile alternatives.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat centrifuge speed can these tubes handle?\u003c\/strong\u003e\u003cbr\u003eThese tubes are rated for centrifugation up to 10,000 × g. Always confirm that your specific rotor and centrifuge configuration does not exceed this RCF rating before use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo the tubes require a rack for storage or processing?\u003c\/strong\u003e\u003cbr\u003eNo — the freestanding flat-bottom base allows the tubes to stand upright on any level bench surface without a rack, simplifying staging, aliquoting, and short-term storage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does the red cap indicate?\u003c\/strong\u003e\u003cbr\u003eThe red cap is designed for color-coded laboratory management, allowing staff to instantly distinguish tube batches, sample types, or priority categories in multi-cap-color workflows. The natural (clear) tube body keeps sample contents visible regardless of cap color.\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, Red Cap — 1000\/Bag\",\"sku\":\"2403550R80E1\",\"mpn\":\"240-3550-R80\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Red\",\"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-R80 is supplied non-sterile and unassembled. 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