{"product_id":"208-3049-030-mini-column-medium-filter","title":"2.4 mL Caps, PP, Natural — 208-3049-030 | 1000\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e2.4 mL Mini Column with Medium Filter (45–90 µm) — PP, Natural, 1000\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese 2.4 mL polypropylene mini columns feature an integrated medium-pore filter (45–90 µm) for high-throughput sample clarification and cleanup ahead of photometric, immunoassay, or chromatographic analysis. Supplied non-sterile in a convenient 1000\/Bag format, part number 208-3049-030 delivers the best per-unit economics for clinical, bioanalytical, and research laboratories running large daily sample volumes. The filter disk is integrated during molding rather than bonded post-process, eliminating adhesive leachables that could interfere with sensitive downstream assays.\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\u003e208-3049-030\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e2.4 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Pore Size\u003c\/td\u003e\n\u003ctd\u003e45–90 µm (Medium)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Integration\u003c\/td\u003e\n\u003ctd\u003eMolded-in (no adhesive bonding)\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 (colorless)\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\u003e1000\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Centrifuge Speed\u003c\/td\u003e\n\u003ctd\u003eUp to 3000×g\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\u003eSerum and plasma clarification prior to photometric or chromatographic analysis, where the full 2.4 mL aspirated volume requires particle removal\u003c\/li\u003e\n\u003cli\u003eUrine drug screening and toxicology sample prep — particle removal before immunoassay (IA) or GC-MS\/MS\u003c\/li\u003e\n\u003cli\u003eBioanalytical SPE cleanup ahead of LC-UV or LC-MS\/MS; low-extractable PP construction protects assay baselines\u003c\/li\u003e\n\u003cli\u003eCentrifuge-assisted or gravity-flow filtration using bench microcentrifuges (2 mL or 5 mL collection tubes) or vacuum SPE manifolds (12- or 24-port)\u003c\/li\u003e\n\u003cli\u003eMethod development and exploratory SPE protocols requiring higher sample load volumes than a 0.5 mL mini column can accommodate\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThese columns are compatible with centrifuge-based workflows up to 3000×g using standard 2 mL or 5 mL collection tubes, as well as 12- and 24-port vacuum SPE manifolds — verify the column outer diameter against your manifold port specifications before use. Gravity-flow operation on a bench stand with a 5 mL collection tube is also suitable for clear aqueous matrices. Laboratories that run both mini column formats simultaneously should note that the 2.4 mL Natural column is visually similar to its 0.5 mL Pink sibling (208-1289-03S); differentiate the two formats by part number rather than color when both are in use on the same prep bench. For lower-volume runs or method-development trials, the 200\/Bag sibling SKU 208-3049-03S offers the same 2.4 mL PP Natural medium-filter construction in a smaller pack.\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 \/ saline\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\u003eSerum, plasma, urine matrices\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthanol and methanol (\u0026lt;70%)\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetonitrile (ACN)\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact; verify for extended exposure\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\u003eNot recommended\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 mini columns are manufactured under ISO 9001 quality management using FDA-compliant, BPA-free, phthalate-free, and latex-free polypropylene resin. The molded-in filter disk design eliminates adhesive leachables, supporting low-extractable performance requirements in enzymatic and LC downstream workflows. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, typically the same business day for stocking items; volume pricing is available for high-throughput labs placing multi-bag orders.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan these columns be used with a centrifuge, or are they gravity-flow only?\u003c\/strong\u003e\u003cbr\u003eBoth modes are supported. The 2.4 mL PP mini columns are rated for centrifuge-assisted filtration up to 3000×g using a standard bench microcentrifuge with 2 mL or 5 mL collection tubes. Gravity-flow operation on a bench stand is also suitable for clear aqueous matrices.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these columns sterile?\u003c\/strong\u003e\u003cbr\u003eNo — they are supplied non-sterile in 1000\/Bag packaging. For the vast majority of sample clarification and SPE cleanup workflows (serum, plasma, urine, bioanalytical) sterility is not a requirement, but confirm against your specific protocol before use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between this product and the 208-1289-03S mini column?\u003c\/strong\u003e\u003cbr\u003eThe 208-1289-03S is a 0.5 mL mini column in Pink PP with a medium filter, packaged 200\/Bag. These 208-3049-030 columns offer a 2.4 mL capacity — better suited to serum and plasma samples where the full aspirated volume needs clarification, or urine matrices requiring larger filtrate yields per column. The Pink color on the smaller format helps differentiate the two when both are in use on the same bench.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs a smaller pack size available for method development or lower-volume labs?\u003c\/strong\u003e\u003cbr\u003eYes. The sibling SKU 208-3049-03S provides the identical 2.4 mL PP Natural medium-filter (45–90 µm) construction in a 200\/Bag format, which is well suited to exploratory SPE protocol development or labs with lower daily sample volumes.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"2.4 mL Mini Column with Medium Filter (45–90 µm) — PP, Natural, 1000\/Bag\",\"sku\":\"2083049030E1\",\"mpn\":\"208-3049-030\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polypropylene (PP)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"204.69\",\"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\":\"Can these columns be used with a centrifuge, or are they gravity-flow only?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Both modes are supported. The 2.4 mL PP mini columns are rated for centrifuge-assisted filtration up to 3000×g using a standard bench microcentrifuge with 2 mL or 5 mL collection tubes. Gravity-flow operation on a bench stand is also suitable for clear aqueous matrices.\"}},{\"@type\":\"Question\",\"name\":\"Are these columns sterile?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No — they are supplied non-sterile in 1000\/Bag packaging. For the vast majority of sample clarification and SPE cleanup workflows sterility is not a requirement, but confirm against your specific protocol before use.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between this product and the 208-1289-03S mini column?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The 208-1289-03S is a 0.5 mL mini column in Pink PP with a medium filter, packaged 200\/Bag. 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