{"product_id":"222-2449-g5k-sterile-conical-centrifuge-tube","title":"15 mL Tube Racks, Screw Caps, PPC, Green, BD\/Falcon Compatible — 222-2449-G5K | 25\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003eQuick Reference\u003c\/h2\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth\u003ePart Number\u003c\/th\u003e \u003ctd\u003e222-2449-G5K\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCapacity\u003c\/th\u003e \u003ctd\u003e15 mL\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eMaterial\u003c\/th\u003e \u003ctd\u003ePolystyrene (PS)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eColor\u003c\/th\u003e \u003ctd\u003eNatural\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCap\u003c\/th\u003e \u003ctd\u003eGreen screw cap — unassembled (tube + cap in bag)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eGreen Cap\u003c\/th\u003e \u003ctd\u003eStandard 15 mL conical cap color convention\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003ePack Format\u003c\/th\u003e \u003ctd\u003e25\/Bag Unassembled\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eSterility\u003c\/th\u003e \u003ctd\u003eSterile\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eOrigin\u003c\/th\u003e \u003ctd\u003eMade in USA\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003ePrice\u003c\/th\u003e \u003ctd\u003e$189.98\/Bag ($7.5990\/tube)\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eTechnical Narrative\u003c\/h2\u003e \u003cp\u003eThe Caplugs® Evergreen \u003cstrong\u003e222-2449-G5K\u003c\/strong\u003e is a \u003cstrong\u003e15 mL Sterile Conical Centrifuge Tube with Green Cap\u003c\/strong\u003e in \u003cstrong\u003ePS\u003c\/strong\u003e (Natural), 25\/Bag Unassembled. The green cap is the industry-standard color convention for 15 mL conical tubes, established by the Falcon\/BD format used across cell biology and clinical labs worldwide. The sterile specification distinguishes this tube from the non-sterile 220-series conicals — required when the tube will directly contact cells in culture, receive a sterile specimen, or feed a downstream sterile process. The 25\/Bag Unassembled format provides tube and cap in the same bag for bench assembly before use — the cost-effective format for labs that assemble at point of use.\u003c\/p\u003e \u003cp\u003ePS provides optical clarity for direct visual reading of cell pellet, turbidity, and gradient interface through the tube wall, and low autofluorescence for fluorescence-based tube-format assays. BPA-free, phthalate-free, FDA-compliant, \u003c\/p\u003e \u003cp\u003eProcurement economics: \u003cstrong\u003e$189.98\/Bag\u003c\/strong\u003e (25\/Bag), \u003cstrong\u003e$7.5990\/tube\u003c\/strong\u003e. Siblings: \u003cstrong\u003e222-2448-G50\u003c\/strong\u003e (15 mL PS Green Cap 50\/Tray Assembled); \u003cstrong\u003e222-2469-G80\u003c\/strong\u003e (15 mL PPC Green Cap 50\/Tray Assembled); \u003cstrong\u003e222-2470-G8K\u003c\/strong\u003e (15 mL PPC Green Cap 25\/Bag Unassembled). LabSupplies.com ships from USA inventory, typically same business day.\u003c\/p\u003e \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth\u003ePart Number\u003c\/th\u003e \u003ctd\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCaplugs Item #\u003c\/th\u003e \u003ctd\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCapacity\u003c\/th\u003e \u003ctd\u003e15 mL\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eGeometry\u003c\/th\u003e \u003ctd\u003eConical bottom, threaded neck\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eMaterial\u003c\/th\u003e \u003ctd\u003ePolystyrene (PS)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eColor\u003c\/th\u003e \u003ctd\u003eNatural\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCap\u003c\/th\u003e \u003ctd\u003eGreen screw cap (unassembled)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCap Convention\u003c\/th\u003e \u003ctd\u003eGreen = 15 mL standard (Falcon\/BD color convention)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eSterility\u003c\/th\u003e \u003ctd\u003eSterile\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003ePack Size\u003c\/th\u003e \u003ctd\u003e25\/Bag Unassembled\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eApplication\u003c\/th\u003e \u003ctd\u003eSterile cell culture, specimen collection, centrifugation; PS material\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eBPA \/ Phthalate\u003c\/th\u003e \u003ctd\u003eBPA-Free, Phthalate-Free, Latex-Free\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCountry of Origin\u003c\/th\u003e \u003ctd\u003eUSA \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003ePrice\u003c\/th\u003e \u003ctd\u003e$189.98\/Bag ($7.5990\/tube)\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003e15 mL Sterile PS Conical Centrifuge Tube (Green Cap) Applications\u003c\/h2\u003e \u003cp\u003eThe is compatible with the following centrifuge platforms and sterile laboratory workflows.\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e \u003cth\u003eApplication \/ Platform\u003c\/th\u003e \u003cth\u003eConfiguration\u003c\/th\u003e \u003cth\u003eNotes\u003c\/th\u003e \u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth\u003eBench centrifuge\u003c\/th\u003e \u003ctd\u003eStandard 15 mL conical rotor, up to 3000×g\u003c\/td\u003e \u003ctd\u003eStandard sterile conical; green cap convention\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCell culture harvest\u003c\/th\u003e \u003ctd\u003eSuspension culture, 15 mL scale, BSC\u003c\/td\u003e \u003ctd\u003eSterile for direct cell culture contact\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eBSC \/ cell culture workflow\u003c\/th\u003e \u003ctd\u003eBiosafety cabinet, open-tray format\u003c\/td\u003e \u003ctd\u003e25\/Bag: assemble then load BSC workflow\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eDensity gradient centrifugation\u003c\/th\u003e \u003ctd\u003eFicoll\/Percoll, 15 mL conical\u003c\/td\u003e \u003ctd\u003eConical pellet concentration; sterile for downstream culture\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eSpecimen collection\u003c\/th\u003e \u003ctd\u003eDirect sterile specimen into conical\u003c\/td\u003e \u003ctd\u003eSterile; threaded cap seals for transport\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eCold storage\u003c\/th\u003e \u003ctd\u003e4°C \/ —20°C, tube rack\u003c\/td\u003e \u003ctd\u003ePS: standard cold storage\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eIntracellular staining prep\u003c\/th\u003e \u003ctd\u003eMethanol fix-perm in 15 mL scale\u003c\/td\u003e \u003ctd\u003ePS: avoid prolonged methanol contact\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eChemical Resistance — Polystyrene (PS)\u003c\/h2\u003e \u003cp\u003eCompatibility reference for PS at typical laboratory conditions.\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e\u003ctr\u003e \u003cth\u003eReagent \/ Condition\u003c\/th\u003e \u003cth\u003eCompatibility\u003c\/th\u003e \u003cth\u003eNotes\u003c\/th\u003e \u003c\/tr\u003e\u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e \u003ctd\u003eExcellent\u003c\/td\u003e \u003ctd\u003ePS compatible across pH 4–10.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSerum \/ plasma \/ whole blood\u003c\/td\u003e \u003ctd\u003eExcellent\u003c\/td\u003e \u003ctd\u003eStandard cell culture and clinical matrix.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCell culture media\u003c\/td\u003e \u003ctd\u003eExcellent\u003c\/td\u003e \u003ctd\u003ePS: standard sterile cell culture material.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFormalin (10% NBF)\u003c\/td\u003e \u003ctd\u003eExcellent\u003c\/td\u003e \u003ctd\u003ePS: compatible for post-culture fixation.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMethanol (\u0026lt;100%)\u003c\/td\u003e \u003ctd\u003eLimited\u003c\/td\u003e \u003ctd\u003eShort-term compatible; avoid prolonged contact.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDMSO (\u0026lt;10%)\u003c\/td\u003e \u003ctd\u003eGood\u003c\/td\u003e \u003ctd\u003eCompatible at standard cryoprotectant concentrations.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eAcetone \/ chloroform\u003c\/td\u003e \u003ctd\u003eNot Compatible\u003c\/td\u003e \u003ctd\u003eDissolves PS; do not use.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDensity gradient media (Ficoll\/Percoll)\u003c\/td\u003e \u003ctd\u003eExcellent\u003c\/td\u003e \u003ctd\u003ePS: compatible with standard gradient media.\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eClinical \u0026amp; Research Laboratory Applications\u003c\/h2\u003e \u003cp\u003eCaplugs® Evergreen 15 mL sterile PS conical centrifuge tubes with green caps serve cell biology, immunology, clinical diagnostics, and cell therapy laboratories requiring sterile 15 mL conical tubes in the green-cap convention format. The sterile specification is required for direct cell culture contact — suspension culture harvest, lymphocyte isolation, PBMC culture, and T-cell expansion workflows where the conical tube is used as both the centrifuge vessel and the culture vessel. Clinical labs use sterile 15 mL conicals for primary specimen collection and processing — serum separation, urine concentration by centrifugation, and CSF cytospin preparation. The green cap color convention provides immediate visual tube identification in the BSC when 15 mL and 50 mL (blue cap) tubes are used simultaneously in the same workflow. The 25\/Bag Unassembled format provides cost-effective bulk supply for standard labs that assemble tubes at the bench.\u003c\/p\u003e \u003ch2\u003eU.S. Manufacturing, Quality \u0026amp; Institutional Procurement\u003c\/h2\u003e \u003cp\u003eCaplugs® Evergreen products are manufactured in the United States under ISO 9001 quality management from FDA-compliant, food-contact-grade resins. BPA-free, phthalate-free, and latex-free, with material-disclosure documentation supporting CAP, CLIA, and ISO 15189 laboratory accreditation audits.\u003c\/p\u003e \u003cp\u003eLabSupplies.com is an authorized dealer for the full Caplugs Evergreen catalog and ships directly from USA inventory — typically same business day for stocking SKUs. We offer below retail pricing on volume orders, tiered institutional and academic pricing, and direct support for grant-funded laboratories and government procurement channels. Lab managers and procurement officers can \u003ca href=\"#request-sample\"\u003erequest a written quote or speak with a product specialist\u003c\/a\u003e directly from our sales engineering team.\u003c\/p\u003e \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e \u003ch3\u003eAre the conical tubes sterile?\u003c\/h3\u003e \u003cp\u003eYes. Sterile — packed in sterile tray or sterile bag as specified.\u003c\/p\u003e \u003ch3\u003eWhy do 15 mL conical tubes have green caps?\u003c\/h3\u003e \u003cp\u003eGreen caps on 15 mL conical centrifuge tubes are an industry-standard color convention — established by Falcon\/BD and adopted across the laboratory plastics industry — to allow immediate visual identification of 15 mL tubes versus 50 mL tubes (which use blue caps) when both sizes are used simultaneously in a cell culture or serology workflow.\u003c\/p\u003e \u003ch3\u003eWhat is the difference between the 50\/Tray Assembled (222-2448-G50) and 25\/Bag Unassembled  formats?\u003c\/h3\u003e \u003cp\u003e50\/Tray Assembled: tubes pre-assembled with green caps, presented in an open sterile rack tray for direct pick-and-use without assembly — preferred for high-throughput BSC workflows where rapid sequential tube access is needed. 25\/Bag Unassembled: tubes and caps packed in the same sterile bag, assembled at the bench before use — lower per-tube cost for labs where assembly step is acceptable.\u003c\/p\u003e \u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\/\", \"@type\": \"Product\", \"name\": \"Caplugs® Evergreen 222-2449-G5K | 15 mL Conical Centrifuge Tubes with Green Caps, Sterile — PS, Natural, 25\/Bag Unassembled\", \"sku\": \"2222449G5KE1\", \"mpn\": \"222-2449-G5K\", \"brand\": {\"@type\": \"Brand\", \"name\": \"Caplugs® Evergreen\"}, \"manufacturer\": {\"@type\": \"Organization\", \"name\": \"Caplugs® Evergreen\", \"address\": \"USA\"}, \"material\": \"Polystyrene (PS)\", \"color\": \"Natural\", \"image\": \"https:\/\/prod-cp-cdn-images.azureedge.net\/catalog\/92300\/CB133AD1-CB0C-4B1A-9B7F-8FD51EDA3E77\/240-2469-G80_01.jpg\", \"description\": \"Caplugs® Evergreen 222-2449-G5K: 15 mL Conical Centrifuge Tubes with Green Caps, Sterile, PS, Natural, 25\/Bag Unassembled. MADE IN USA, authorized dealer.\", \"additionalProperty\": [{\"@type\": \"PropertyValue\", \"name\": \"Capacity\", \"value\": \"15 mL\"}, {\"@type\": \"PropertyValue\", \"name\": \"Material\", \"value\": \"Polystyrene (PS)\"}, {\"@type\": \"PropertyValue\", \"name\": \"Pack Size\", \"value\": \"25\/Bag Unassembled\"}, {\"@type\": \"PropertyValue\", \"name\": \"Sterility\", \"value\": \"Sterile\"}, {\"@type\": \"PropertyValue\", \"name\": \"Origin\", \"value\": \"USA\"}], \"offers\": {\"@type\": \"Offer\", \"priceCurrency\": \"USD\", \"price\": \"189.98\", \"availability\": \"https:\/\/schema.org\/InStock\", \"url\": \"https:\/\/labsupplies.com\/products\/222-2449-g5k-sterile-conical-centrifuge-tube\"}}\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\/\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Are the 222-2449-G5K conical tubes sterile?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Sterile — packed in sterile tray or sterile bag as specified.\"}}, {\"@type\": \"Question\", \"name\": \"Why do 15 mL conical tubes have green caps?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Green caps on 15 mL conical centrifuge tubes are an industry-standard color convention — established by Falcon\/BD and adopted across the laboratory plastics industry — to allow immediate visual identification of 15 mL tubes versus 50 mL tubes (which use blue caps) when both sizes are used simultaneously in a cell culture or serology workflow.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between the 50\/Tray Assembled (222-2448-G50) and 25\/Bag Unassembled (222-2449-G5K) formats?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"50\/Tray Assembled: tubes pre-assembled with green caps, presented in an open sterile rack tray for direct pick-and-use without assembly — preferred for high-throughput BSC workflows where rapid sequential tube access is needed. 25\/Bag Unassembled: tubes and caps packed in the same sterile bag, assembled at the bench before use — lower per-tube cost for labs where assembly step is acceptable.\"}}]}\u003c\/script\u003e","brand":"Caplugs® Evergreen","offers":[{"title":"Default Title","offer_id":48567133274344,"sku":"2222449G5KE1","price":189.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/240-2469-G80_01_5a2cec61-fe50-42a2-bff5-7f95e8ffac5f.jpg?v=1779033036","url":"https:\/\/labsupplies.com\/products\/222-2449-g5k-sterile-conical-centrifuge-tube","provider":"LabSupplies.com","version":"1.0","type":"link"}