{"product_id":"caplugs-240-2448-g50-15ml-conical-centrifuge-tubes-ps-green-caps","title":"15 mL Centrifuge Tubes, Screw Caps, HDPE, Green, Eppendorf\/Beckman Compatible — 240-2448-G50 | 1,000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e15 mL Conical Centrifuge Tubes with Green HDPE Screw Caps — PS Tube Body, Unassembled, 1,000\/Bag (240-2448-G50)\u003c\/h2\u003e\n\u003cp\u003eThese 15 mL conical centrifuge tubes pair a natural polystyrene (PS) tube body with a green high-density polyethylene (HDPE) threaded screw cap, supplied unassembled in bulk bags of 1,000 for cost-efficient procurement and flexible workflow assembly. The standard 17 × 120 mm conical geometry fits 15 mL rotor positions across all major centrifuge platforms, while the glass-like optical clarity of the PS tube body allows direct visual assessment of pellet formation and supernatant quality without removing the tube from the rack. Supplied non-sterile, the 240-2448-G50 is well suited to high-throughput clinical processing, research sample storage, and color-coded specimen management.\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\u003e240-2448-G50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Volume\u003c\/td\u003e\n\u003ctd\u003e15 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Dimensions\u003c\/td\u003e\n\u003ctd\u003e17 × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Bottom Geometry\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Material\u003c\/td\u003e\n\u003ctd\u003ePolystyrene (PS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Color\u003c\/td\u003e\n\u003ctd\u003eNatural (clear)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Material\u003c\/td\u003e\n\u003ctd\u003eHigh-Density Polyethylene (HDPE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Color\u003c\/td\u003e\n\u003ctd\u003eGreen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCap Type\u003c\/td\u003e\n\u003ctd\u003eThreaded Screw Cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly State\u003c\/td\u003e\n\u003ctd\u003eUnassembled — 1,000 tubes + 1,000 caps per bag\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\u003e1,000\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalates\u003c\/td\u003e\n\u003ctd\u003eBPA-free; no phthalate plasticizers\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\u003eConical centrifugation and cell pelleting at standard clinical and research speeds\u003c\/li\u003e\n\u003cli\u003eSerum, plasma, and whole-blood processing in clinical and hospital laboratories\u003c\/li\u003e\n\u003cli\u003eUrine, environmental, and biochemistry aliquot storage with green-cap color coding for specimen-type differentiation\u003c\/li\u003e\n\u003cli\u003eSupernatant collection and multi-step separation workflows where optical clarity is essential for pellet visualization\u003c\/li\u003e\n\u003cli\u003eHigh-throughput sample archiving and biobanking where bulk unassembled packaging supports pre-labeling before point-of-use assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe standard 17 × 120 mm conical format is designed to seat in 15 mL rotor positions across all major centrifuge platforms. Verified compatible instruments include Eppendorf® 5810R and 5804R centrifuges fitted with the A-4-81 swing-bucket rotor, Beckman Coulter® centrifuges with standard 15 mL conical adapters, and Thermo Fisher Sorvall™ models including the ST16R, Legend X1R, CL10, and Fiberlite™ F15-6×100y rotor. Always confirm your instrument's maximum rated g-force and rotor capacity in the instrument manual before committing to a large-volume purchase, as rotor specifications vary by model and adapter configuration.\u003c\/p\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\u003eTube Body (PS)\u003c\/th\u003e\n\u003cth\u003eCap (HDPE)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\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\u003eGood\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthanol (\u0026lt;70%)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetone\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChloroform \/ aromatic solvents\u003c\/td\u003e\n\u003ctd\u003eNot recommended\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 suitable\u003c\/td\u003e\n\u003ctd\u003eNot suitable\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 produced from virgin, BPA-free, phthalate-free resin under ISO 9001 quality management. The threaded HDPE screw cap delivers a positive torque-resistant seal that maintains integrity at standard centrifugation forces up to 4,000 × g for the 15 mL conical format. LabSupplies.com is an authorized Caplugs® Evergreen dealer, shipping from USA inventory with tiered pricing available for institutional, hospital, and grant-funded laboratory accounts. The unassembled bulk format allows procurement teams to reduce per-unit cost while giving bench staff the flexibility to pre-label tubes before capping at point of use.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these centrifuge tubes and caps supplied already assembled?\u003c\/strong\u003e\u003cbr\u003eNo — each bag contains 1,000 PS tube bodies and 1,000 green HDPE caps packed separately (unassembled). This format supports pre-labeling workflows and gives laboratory staff the flexibility to assemble tubes at the point of use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these tubes sterile, and can they be autoclaved?\u003c\/strong\u003e\u003cbr\u003eThe tubes are supplied non-sterile. Because the tube body is polystyrene and the cap is HDPE, neither component is suitable for autoclave sterilization; PS in particular will deform under standard autoclave temperatures and pressures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum centrifugation speed for these tubes?\u003c\/strong\u003e\u003cbr\u003eThe 15 mL conical format with threaded HDPE screw cap is rated for centrifugation up to 4,000 × g under standard conditions. Always consult your centrifuge and rotor manual to confirm compatibility and maximum rated g-force before use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy are the caps green, and are other cap colors available?\u003c\/strong\u003e\u003cbr\u003eGreen caps are commonly used in laboratory color-coding schemes to designate specific specimen types — such as urine, environmental, or biochemistry aliquots — in multi-analyte workflows. Related family members in the Caplugs® Evergreen line are available with natural and red caps, enabling single-vendor procurement across your entire color-coding system.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"15 mL Conical Centrifuge Tubes with Green HDPE Screw Caps, PS, Unassembled, 1,000\/Bag — Caplugs® Evergreen 240-2448-G50\",\"sku\":\"240-2448-G50\",\"mpn\":\"240-2448-G50\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polystyrene (PS) tube body; High-Density Polyethylene (HDPE) cap\",\"color\":\"Natural tube \/ Green cap\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"202.24\",\"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 and caps supplied already assembled?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — each bag contains 1,000 PS tube bodies and 1,000 green HDPE caps packed separately (unassembled). 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