{"product_id":"conical-bottom-test-tubes-4-5ml-12-75mm-green-pp-2142355g30e1","title":"4.5 mL Centrifuge Tubes, Conical Bottom, PP, Green — 214-2355-G30 | 250\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e4.5 mL Conical Bottom Centrifuge Tubes — Polypropylene, Green, 250\/Bag (214-2355-G30)\u003c\/h2\u003e\n\u003cp\u003eThese 4.5 mL conical bottom tubes measure 12 × 75 mm and are molded from virgin-grade polypropylene (PP), making them well suited for clinical centrifugation, hematology differential work, and urinalysis sediment analysis. Supplied non-sterile in sealed 250\/Bag packaging, they offer consistent lot-to-lot dimensional tolerances that ensure reliable seating in standard 12 mm centrifuge tube holders. The green color provides immediate visual identification in color-coded sample racks, reducing handling errors in high-throughput clinical environments.\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\u003e214-2355-G30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e4.5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12 × 75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Style\u003c\/td\u003e\n\u003ctd\u003eConical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eGreen\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\u003e250\/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\u003eClinical hematology differential — conical geometry concentrates the cellular pellet at the tube tip for clean aspiration with minimal disturbance\u003c\/li\u003e\n\u003cli\u003eCentrifuge pelleting in 12 mm rotor positions for serum, plasma, and whole-blood samples\u003c\/li\u003e\n\u003cli\u003eToxicology sample preparation — conical bottom supports complete phase separation and pellet recovery\u003c\/li\u003e\n\u003cli\u003eUrinalysis sediment analysis — tight dimensional tolerances ensure consistent sediment concentration in the conical tip\u003c\/li\u003e\n\u003cli\u003eGeneral clinical bench work requiring color-coded, rack-compatible 12 × 75 mm tubes\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\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsopropanol\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic \/ chlorinated solvents\u003c\/td\u003e\n\u003ctd\u003eLimited — not recommended for prolonged contact\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 tubes are produced at ISO-certified facilities from FDA-compliant virgin-grade polypropylene that is BPA-free and phthalate-free. Each bag carries a lot number and manufacturing date to support full traceability under CAP, CLIA, and ISO 15189 quality programs. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered volume pricing available for clinical labs, hospitals, and research institutions placing recurring orders.\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 214-2355-G30 is supplied non-sterile in sealed 250\/Bag packaging. For applications requiring a sterile article, a separately listed sterile format should be selected.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat centrifuge rotor positions do these tubes fit?\u003c\/strong\u003e\u003cbr\u003eThe 12 × 75 mm outer dimensions are compatible with standard 12 mm clinical centrifuge tube holders. Always confirm that your specific rotor or rack accepts the 12 mm diameter before use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy is the tube green?\u003c\/strong\u003e\u003cbr\u003eGreen is used as a color-coding convention to help staff quickly identify the correct tube type in multi-analyte sample racks. This reduces misidentification errors in high-throughput clinical workflows without requiring any retraining.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these tubes be used with serum, plasma, and urine samples?\u003c\/strong\u003e\u003cbr\u003eYes — polypropylene is chemically compatible with serum, plasma, urine, and standard aqueous clinical reagent matrices. The virgin-grade, BPA-free, phthalate-free resin is appropriate for direct contact with these sample types.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"4.5 mL Conical Bottom Centrifuge Tubes, Polypropylene, Green, 250\/Bag — Caplugs® Evergreen 214-2355-G30\",\"sku\":\"2142355G30E1\",\"mpn\":\"214-2355-G30\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene (PP)\",\"color\":\"Green\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"84.11\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\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 — they are supplied non-sterile in sealed 250\/Bag packaging. 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