Caplugs® Evergreen 5" Sample Preparation Columns, Polystyrene (PS) with Medium Filters (45-90 µm), Non-Sterile, 200/Bag The Caplugs® Evergreen 5" Sample Preparation Columns are molded polystyrene gravity-flow columns fitted with a medium-porosity filter rated 45-90 microns, supplied non-sterile in bags of 200. Bench scientists rely on them for resin packing, gravity-flow purification, and small-scale solid-phase extraction workflows. Technical Specifications Product Type Sample Preparation Column (gravity-flow) Volume/Size 5 in. (127 mm) column length Material Polystyrene (PS) Filter Medium porosity, 45-90 microns Sterility Non-Sterile Pack Size 200/Bag Country of Origin USA Applications Gravity-flow column chromatography and resin packing Manual solid-phase extraction (SPE) and sample cleanup Affinity and ion-exchange resin batch purification Peptide and oligonucleotide synthesis support workflows Buffer exchange and desalting of biological samples Small-scale protein and antibody enrichment Quality & Procurement labsupplies.com is an authorized Caplugs® Evergreen dealer shipping these columns from US inventory. Each bag carries lot numbers that support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Manufactured in the USA, these columns are available with institutional and grant-funded tiered pricing for departments standardizing on a single prep-column format. Frequently Asked Questions What porosity is the integrated filter? Each column includes a medium-porosity filter rated 45-90 microns, suitable for retaining most chromatography resins while allowing reliable gravity flow of aqueous buffers. Are these columns sterile? No. These are supplied non-sterile, 200 per bag. If your protocol requires sterility, sanitize or autoclave per your facility's validated procedure, noting polystyrene's temperature limitations. What is the column made from? The column body is molded polystyrene (PS). Confirm compatibility with your solvents before use, as polystyrene is not recommended for aggressive organic solvents. How are the columns packaged? Columns ship 200 per bag (SKU 208-3367-050). Each bag is lot-numbered to support traceability requirements in accredited laboratory environments. { "@context": "https://schema.org", "@type": "Product", "name": "Caplugs® Evergreen 5\" Sample Preparation Columns with Medium Filters (45-90 µm), Polystyrene (PS), Non-Sterile, 200/Bag", "sku": "208-3367-050", "brand": { "@type": "Brand", "name": "Caplugs® Evergreen" }, "countryOfOrigin": "USA", "offers": { "@type": "Offer", "url": "https://labsupplies.com/products/208-3367-050", "priceCurrency": "USD", "price": "135.89", "availability": "https://schema.org/InStock", "seller": { "@type": "Organization", "name": "labsupplies.com" } } } { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What porosity is the integrated filter?", "acceptedAnswer": { "@type": "Answer", "text": "Each column includes a medium-porosity filter rated 45-90 microns, suitable for retaining most chromatography resins while allowing reliable gravity flow of aqueous buffers." } }, { "@type": "Question", "name": "Are these columns sterile?", "acceptedAnswer": { "@type": "Answer", "text": "No. These are supplied non-sterile, 200 per bag. If your protocol requires sterility, sanitize or autoclave per your facility's validated procedure, noting polystyrene's temperature limitations." } }, { "@type": "Question", "name": "What is the column made from?", "acceptedAnswer": { "@type": "Answer", "text": "The column body is molded polystyrene (PS). Confirm compatibility with your solvents before use, as polystyrene is not recommended for aggressive organic solvents." } }, { "@type": "Question", "name": "How are the columns packaged?", "acceptedAnswer": { "@type": "Answer", "text": "Columns ship 200 per bag (SKU 208-3367-050). Each bag is lot-numbered to support traceability requirements in accredited laboratory environments." } } ] }
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