{"product_id":"freestanding-centrifuge-tubes-50ml-black-caps-ppc-non-sterile-1000-bag-unassembled-caplugs-evergreen-2403550z80e1","title":"50 mL Centrifuge Tubes, Freestanding, PPC, Black — 240-3550-Z80 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e50 mL Freestanding Centrifuge Tubes, Black Cap, Polypropylene Copolymer — 1000\/Bag (240-3550-Z80)\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 an unassembled 1000\/Bag format for efficient storage and dispensing. Molded-in graduations every 5 mL support accurate volume measurement directly on the tube, while the freestanding flat-bottom base eliminates the need for a rack during bench-top processing, centrifuge staging, and storage. The black cap enables straightforward color-coded batch and sample management across multi-cap-color laboratory systems.\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-Z80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct 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\u003eEvery 5 mL (molded-in)\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\u003eBlack\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\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 research workflows\u003c\/li\u003e\n\u003cli\u003eNucleic acid extraction (DNA\/RNA) requiring a chemically resistant, large-volume tube\u003c\/li\u003e\n\u003cli\u003eProtein purification and cell culture processing at the 50 mL scale\u003c\/li\u003e\n\u003cli\u003eMicrobiology and environmental laboratory sample collection and processing\u003c\/li\u003e\n\u003cli\u003eBench-top specimen staging, aliquoting, and storage without an external rack — enabled by the freestanding flat-bottom base\u003c\/li\u003e\n\u003cli\u003eColor-coded batch and sample management in multi-cap-color laboratory systems using the black cap designation\u003c\/li\u003e\n\u003cli\u003eCAP-, CLIA-, and ISO 15189-supporting workflows that require lot-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 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 (e.g., acetone)\u003c\/td\u003e\n\u003ctd\u003eLimited — evaluate for your application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated \/ aromatic solvents\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoclaving\u003c\/td\u003e\n\u003ctd\u003eCompatible (polypropylene copolymer)\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 high-throughput clinical, research, and institutional procurement programs.\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 — the 240-3550-Z80 tubes are supplied non-sterile. For workflows requiring sterile consumables, please contact us about sterile centrifuge tube options.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo the tubes come assembled with caps attached?\u003c\/strong\u003e\u003cbr\u003eNo — these tubes are supplied unassembled (caps and tubes packaged separately within the bag). This format reduces package volume and is well suited to high-volume procurement and compact storage environments.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these tubes be used in a fixed-angle rotor without a rack?\u003c\/strong\u003e\u003cbr\u003eYes — the freestanding flat-bottom base allows stable bench-top placement without a rack before and after centrifugation. When centrifuging, always confirm that your rotor and adapters accommodate standard 50 mL conical tube dimensions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does the black cap indicate, and are other cap colors available?\u003c\/strong\u003e\u003cbr\u003eThe black cap is intended for color-coded sample and batch identification within multi-cap-color laboratory tube management systems. Caplugs® Evergreen offers 50 mL freestanding centrifuge tubes in additional cap colors; contact LabSupplies.com to identify the right option for your color-coding scheme.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"50 mL Freestanding Centrifuge Tubes, Black Cap, Polypropylene Copolymer, Non-Sterile — 1000\/Bag\",\"sku\":\"2403550Z80E1\",\"mpn\":\"240-3550-Z80\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene Copolymer (PPC)\",\"color\":\"Black 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 — the 240-3550-Z80 tubes are supplied non-sterile. 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