{"product_id":"214-2380-030-round-bottom-test-tube-pp","title":"10–16 mL Centrifuge Tubes, Round Bottom, Borosilicate Glass, Natural — 214-2380-030 | 125\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e16 mL Round-Bottom Centrifuge \u0026amp; Test Tubes — Borosilicate Glass, 17 × 100 mm, Natural, 125\/Bag (214-2380-030)\u003c\/h2\u003e\n\u003cp\u003eThese 16 mL round-bottom tubes measure 17 × 100 mm and are manufactured from polypropylene (PP) in a natural (translucent) color, supplied non-sterile in a convenient 125\/Bag small-pack format. Open-top and cap-free, they are well suited to a wide range of bench, centrifugation, and organic-solvent workflows where polypropylene's superior chemical resistance over polystyrene is required. Made in USA from FDA-compliant, BPA-free resin under ISO 9001 quality controls, part number 214-2380-030 offers a reliable, cost-effective format for specialty-use standing stock and evaluation quantities.\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\u003e214-2380-030\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e16 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e17 × 100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGeometry\u003c\/td\u003e\n\u003ctd\u003eRound Bottom\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\u003eNatural (Translucent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure\u003c\/td\u003e\n\u003ctd\u003eOpen Top (no cap included)\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\u003e125\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate \/ Latex\u003c\/td\u003e\n\u003ctd\u003eBPA-Free, Phthalate-Free, Latex-Free\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\u003e\n\u003cstrong\u003eOrganic solvent reactions:\u003c\/strong\u003e Full compatibility with acetonitrile and methanol co-solvent protocols where polystyrene tubes cannot be used\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSPE eluate collection:\u003c\/strong\u003e Positioned directly beneath SPE columns or manifolds to collect ACN and MeOH-based eluates without tube degradation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentrifugation:\u003c\/strong\u003e Round-bottom geometry seats correctly in standard 17 × 100 mm centrifuge rotor adapters; PP withstands typical centrifuge forces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater bath incubation:\u003c\/strong\u003e Suitable for water bath use up to approximately 80 °C in standard 17 × 100 mm tube racks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial dilution and reagent prep:\u003c\/strong\u003e 16 mL working volume accommodates dilution series and reagent staging in both manual and rack-based workflows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColorimetric assays:\u003c\/strong\u003e Natural PP provides adequate optical clarity for direct spectrophotometric reading with a tube or cuvette adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerum, plasma, and whole-blood handling:\u003c\/strong\u003e Low protein-binding PP surface is suitable for standard clinical matrices\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCulture inoculation:\u003c\/strong\u003e Compatible with microbiological bench work when aseptic technique is applied (tubes are non-sterile as supplied)\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 — inert across pH 2–12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids (HCl, H₂SO₄, \u0026lt;10%)\u003c\/td\u003e\n\u003ctd\u003eGood — suitable for SPE wash and reaction media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute bases (NaOH, \u0026lt;10%)\u003c\/td\u003e\n\u003ctd\u003eExcellent — PP preferred over PS for caustic reagents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol \/ acetonitrile (\u0026lt;100%)\u003c\/td\u003e\n\u003ctd\u003eExcellent — full organic solvent compatibility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthanol \/ IPA (\u0026lt;100%)\u003c\/td\u003e\n\u003ctd\u003eExcellent — compatible for extraction and fixation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthyl acetate\u003c\/td\u003e\n\u003ctd\u003eLimited — short-term contact only; avoid prolonged exposure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDichloromethane \/ chloroform\u003c\/td\u003e\n\u003ctd\u003eNot recommended — causes cracking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerum \/ plasma \/ whole blood\u003c\/td\u003e\n\u003ctd\u003eExcellent — low protein-binding surface\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 round-bottom tubes are produced in a U.S. facility operating under ISO 9001 quality management from FDA-compliant, BPA-free, phthalate-free, and latex-free polypropylene resin. LabSupplies.com is an authorized dealer of Caplugs® Evergreen consumables and ships from USA inventory, typically the same business day for stocking items. The 125\/Bag pack size is well suited to evaluation, specialty-use standing stock, and labs with moderate consumption of this tube format, with volume pricing available for larger institutional or grant-funded orders.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these tubes sterile, and can they be used directly for cell culture or microbiological work?\u003c\/strong\u003e\u003cbr\u003eThese tubes are supplied non-sterile. They can be used for microbiological or cell culture applications provided appropriate aseptic technique is followed; if a sterile format is required, these tubes would need to be autoclaved prior to use — polypropylene is autoclavable.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy choose PP over PS for round-bottom tubes in this size?\u003c\/strong\u003e\u003cbr\u003ePolypropylene offers full compatibility with acetonitrile, methanol, ethanol, and IPA, as well as resistance across pH 2–12 — properties that polystyrene cannot match. If your workflow involves organic solvents, SPE eluate collection, or caustic reagents, PP is the preferred material.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo these tubes come with caps or closures?\u003c\/strong\u003e\u003cbr\u003eNo — these are open-top tubes supplied without a cap or closure. If a sealed tube is needed, compatible snap-cap or screw-cap closures for 17 × 100 mm tubes should be sourced separately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat centrifuge rotor or adapter do these tubes require?\u003c\/strong\u003e\u003cbr\u003eThe 17 × 100 mm round-bottom geometry fits standard adapters designed for that tube diameter and length. Confirm that your centrifuge rotor or swing-bucket adapter accommodates 17 mm outer diameter tubes before use.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"16 mL Round-Bottom Test Tubes, Polypropylene, Natural, 17 × 100 mm — 125\/Bag\",\"sku\":\"2142380030E1\",\"mpn\":\"214-2380-030\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene (PP)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"75.37\",\"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 tubes sterile, and can they be used directly for cell culture or microbiological work?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"These tubes are supplied non-sterile. 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