{"product_id":"208-3389-060-universal-column","title":"1.5 mL Microcentrifuge Tubes, PP, Natural — 208-3389-060 | 200\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003eUniversal Fine-Filter SPE Columns, 15–45 µm PP — Multi-Format Gravity, Vacuum \u0026amp; Centrifuge Use (208-3389-060)\u003c\/h2\u003e\n\u003cp\u003eThese Caplugs® Evergreen universal polypropylene SPE columns feature an integrated 15–45 micron fine-filter disk that delivers the highest filtrate clarity in the PP column line, making them the preferred choice for LC-MS\/MS injection preparation, GC-MS confirmatory cleanup, and any protocol where residual particulates cause analytical column fouling or baseline noise. The universal body geometry adapts to 1.5 mL, 2 mL, and 5 mL collection tube positions and is compatible with both gravity-flow and vacuum manifold workflows without requiring a length-matched manifold holder. Supplied non-sterile in 200\/Bag packaging, part number 208-3389-060 is a practical high-throughput option for labs running diverse SPE protocols across multiple platform types.\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\u003e208-3389-060\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eUniversal Column\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Grade\u003c\/td\u003e\n\u003ctd\u003eFine (15–45 µm)\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\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\u003e200\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate Status\u003c\/td\u003e\n\u003ctd\u003eBPA-Free, Phthalate-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\u003eLC-MS\/MS injection preparation requiring maximum particulate removal before analytical column entry\u003c\/li\u003e\n\u003cli\u003eGC-MS confirmatory cleanup where filtrate clarity directly affects detection baselines\u003c\/li\u003e\n\u003cli\u003eDissolution testing filtration in pharmaceutical QC workflows\u003c\/li\u003e\n\u003cli\u003eEnvironmental and biological matrix SPE cleanup across varied sample types\u003c\/li\u003e\n\u003cli\u003eMethod scouting and development where a universal geometry eliminates format-specific column lock-in\u003c\/li\u003e\n\u003cli\u003eProtein precipitation clarification prior to instrumental analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe universal column body is engineered to seat in standard 1.5 mL microcentrifuge tube positions for bench centrifuge runs (up to approximately 3000×g), 2 mL collection tube positions for gravity-flow or centrifuge workflows, and 5 mL collection tube positions for larger sample-load protocols (verify column outer diameter fit with your specific 5 mL tube format before use). For vacuum-driven workflows, the universal geometry adapts to multi-port SPE manifolds with universal tube holders, accommodating various manifold port sizes without a dedicated length-matched holder. Gravity-flow bench stands are also supported, where the fine 15–45 µm filter pore size is particularly well suited to high-clarity filtrate requirements. Labs building out a complete Universal PP column set can pair these fine-filter columns with the 208-3387-060 (Coarse Filter, 90–135 µm) and 208-3388-060 (Medium Filter, 45–90 µm) for full-range pore-size coverage across the same universal platform.\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\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\u003eAcetonitrile\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol\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\u003eEthanol\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\u003eChlorinated solvents (chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (toluene, xylene)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetone\u003c\/td\u003e\n\u003ctd\u003eLimited — short-term contact only\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 SPE columns are manufactured under ISO 9001 quality management from FDA-compliant, BPA-free, phthalate-free polypropylene resin, with the fine-filter disk molded integrally into each column body for consistent pore geometry across the full lot. LabSupplies.com is an authorized dealer of Caplugs® Evergreen consumables and ships from USA inventory, typically same business day for stocking items, with volume pricing available at ten or more bags for institutional, clinical, and grant-funded laboratories.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes the fine-filter grade different from the coarse or medium options?\u003c\/strong\u003e\u003cbr\u003eThe 15–45 µm pore size of these columns provides the highest filtrate clarity in the Universal PP column series — ideal for sensitive downstream techniques such as LC-MS\/MS and GC-MS where even small particulates can foul analytical columns or elevate baseline noise. The coarse (90–135 µm) and medium (45–90 µm) grades are better suited to higher-viscosity matrices or workflows where throughput is prioritized over maximum clarity.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these columns compatible with vacuum manifolds as well as centrifuges?\u003c\/strong\u003e\u003cbr\u003eYes. The universal body geometry is designed for gravity-flow, vacuum manifold, and centrifuge workflows without requiring a length-matched manifold holder. For vacuum manifolds, confirm that your manifold uses a universal tube holder configuration to ensure a proper seat.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these SPE columns sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile in 200\/Bag packaging. For applications requiring sterile filtration, additional downstream processing steps should be incorporated per your laboratory's validated method.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan polypropylene columns be used with acetonitrile and methanol mobile phases?\u003c\/strong\u003e\u003cbr\u003eYes. Polypropylene offers excellent compatibility with acetonitrile, methanol, aqueous buffers, and dilute acids and bases — the solvents most commonly used in SPE conditioning, washing, and elution steps. Chlorinated and aromatic solvents should be avoided, as PP has limited resistance to those chemical classes.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Universal Fine-Filter SPE Columns, 15–45 µm, Polypropylene, Natural — 200\/Bag\",\"sku\":\"2083389060E1\",\"mpn\":\"208-3389-060\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene (PP)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"163.18\",\"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\":\"What makes the fine-filter grade different from the coarse or medium options?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The 15–45 µm pore size provides the highest filtrate clarity in the Universal PP column series — ideal for LC-MS\/MS and GC-MS where particulates can foul analytical columns or elevate baseline noise. 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