{"product_id":"208-3040-020-surety-column-fine-filter","title":"1.5–2.4 mL Microcentrifuge Tubes, LDPE, Natural — 208-3040-020 | 500\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e1.5–2.4 mL Surety® Fine-Filter Mini Column, LDPE, Natural — SPE \u0026amp; LC-MS\/MS Sample Prep (208-3040-020)\u003c\/h2\u003e\n\u003cp\u003eThe Caplugs® Evergreen Surety® Mini 1.5″ column features a 15–45 micron fine-filter disk that delivers high-clarity filtrate for demanding sample-preparation workflows such as LC-MS\/MS injection prep, SPE protein-precipitation cleanup, and confirmatory reference-method testing. Molded in Low-Density Polyethylene (LDPE) in a 1.5–2.4 mL working-capacity body, these columns fit standard 2 mL microcentrifuge collection vessels and ship non-sterile in convenient 500\/Bag quantities. Made in USA, the Surety® line is engineered with low extractables and FDA-compliant, BPA-free resin — making it a reliable choice wherever sensitive downstream MS detection is involved.\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\u003e208-3040-020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSurety® Column, Fine Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Pore Size\u003c\/td\u003e\n\u003ctd\u003e15–45 microns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStyle\u003c\/td\u003e\n\u003ctd\u003eMini 1.5″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Capacity\u003c\/td\u003e\n\u003ctd\u003e1.5–2.4 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eLow-Density Polyethylene (LDPE)\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\u003e500\/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\u003eLC-MS\/MS injection preparation:\u003c\/strong\u003e The 15–45 micron fine filter removes residual particulates from protein-precipitation filtrates, protecting analytical columns and reducing costly column replacements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid-phase extraction (SPE) workflows:\u003c\/strong\u003e Compatible with bench microcentrifuge (up to 3,000 × g) and vacuum manifold platforms for efficient loading, washing, and elution steps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirmatory reference-method testing:\u003c\/strong\u003e High-clarity filtrate supports GC-MS and LC-UV confirmatory assays in clinical and forensic toxicology laboratories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual pressure-assisted elution:\u003c\/strong\u003e The inherent flexibility of LDPE allows gentle finger pressure to accelerate flow through the fine-filter disk without a centrifuge — a practical advantage during manual sample-prep runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral sample cleanup:\u003c\/strong\u003e Dilute organic modifier and aqueous buffer clarification ahead of any chromatographic or immunoassay platform requiring low-particulate samples.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe Surety® Mini 1.5″ column body is sized to seat directly into standard 2 mL microcentrifuge collection tubes, making it compatible with bench centrifuge workflows at up to 3,000 × g. For higher-throughput labs, the column format is compatible with Waters®, Phenomenex®, and Supelco® 96-well and tube-format SPE vacuum manifolds — verify tube adapter dimensions before deployment. The LDPE flex body also supports standalone manual pressure-elution at the bench without any additional hardware. Laboratories evaluating larger capacity needs may consider the Surety® Midi 1.9″ (208-3042-020, 2.4–3.5 mL) or the Surety® Standard 2.3″ (208-3045-020, 3.5–5.0 mL) siblings in the same product line.\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\u003eDilute acids and bases\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute organic modifiers (methanol, acetonitrile \u0026lt;50%)\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlcohols (ethanol, isopropanol)\u003c\/td\u003e\n\u003ctd\u003eGood — short-term contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConcentrated chlorinated 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\u003eAutoclaving\u003c\/td\u003e\n\u003ctd\u003eNot recommended (LDPE)\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 Surety® columns are produced by Caplugs® Evergreen under ISO 9001 quality management from FDA-compliant LDPE resin that is BPA-free, phthalate-free, and latex-free. The fine-filter pore size of 15–45 microns provides tighter particulate exclusion than medium-filter alternatives, and LDPE's inherently low extractables profile makes it particularly well-suited for sensitive mass-spectrometric detection. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory; most stocking items ship the same business day, and volume pricing is available for institutional, hospital, and grant-funded procurement teams.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat collection tube does this column fit?\u003c\/strong\u003e\u003cbr\u003eThe Mini 1.5″ body is designed to seat into a standard 2 mL microcentrifuge collection tube. Confirm your tube's inner-diameter spec if you are using a non-standard vessel or a manifold adapter.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use these columns without a centrifuge?\u003c\/strong\u003e\u003cbr\u003eYes. Because the column body is molded from flexible LDPE, analysts can apply gentle finger pressure to assist flow through the fine-filter disk in manual, standalone bench workflows — no centrifuge is required for pressure-assisted elution.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does the fine filter (15–45 microns) differ from a medium-filter column?\u003c\/strong\u003e\u003cbr\u003eThe tighter pore range of 15–45 microns provides greater particulate exclusion than a medium-filter option, yielding a higher-clarity filtrate. This translates directly to fewer analytical column fouling events and lower downstream column replacement costs in LC-MS\/MS and confirmatory reference-method workflows.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these columns compatible with organic solvents used in SPE washes?\u003c\/strong\u003e\u003cbr\u003eLDPE tolerates aqueous buffers, dilute acids and bases, and short-term contact with dilute organic modifiers such as methanol and acetonitrile commonly used in SPE wash and elution steps. Concentrated chlorinated or aromatic solvents are not recommended, as they can swell or permeate LDPE.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"1.5–2.4 mL Surety® Fine-Filter Mini Column, LDPE, Natural, 500\/Bag — Caplugs® Evergreen 208-3040-020\",\"sku\":\"2083040020E1\",\"mpn\":\"208-3040-020\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Low-Density Polyethylene (LDPE)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"115.72\",\"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 collection tube does this column fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The Mini 1.5″ body is designed to seat into a standard 2 mL microcentrifuge collection tube. Confirm your tube's inner-diameter spec if you are using a non-standard vessel or a manifold adapter.\"}},{\"@type\":\"Question\",\"name\":\"Can I use these columns without a centrifuge?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Because the column body is molded from flexible LDPE, analysts can apply gentle finger pressure to assist flow through the fine-filter disk in manual, standalone bench workflows — no centrifuge is required for pressure-assisted elution.\"}},{\"@type\":\"Question\",\"name\":\"How does the fine filter (15–45 microns) differ from a medium-filter column?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The tighter pore range of 15–45 microns provides greater particulate exclusion than a medium-filter option, yielding a higher-clarity filtrate. 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