{"product_id":"208-3367-050-five-inch-column","title":"Sample Preparation Columns, 5\" Polystyrene (PS) with Medium Filters 45-90 µm, Non-Sterile, 200\/Bag | Caplugs® Evergreen","description":"\u003ch1\u003eCaplugs® Evergreen 5\" Sample Preparation Columns, Polystyrene (PS) with Medium Filters (45-90 µm), Non-Sterile, 200\/Bag\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eCaplugs® Evergreen 5\" Sample Preparation Columns\u003c\/strong\u003e 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.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSample Preparation Column (gravity-flow)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\/Size\u003c\/td\u003e\n\u003ctd\u003e5 in. (127 mm) column length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolystyrene (PS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter\u003c\/td\u003e\n\u003ctd\u003eMedium porosity, 45-90 microns\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\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGravity-flow column chromatography and resin packing\u003c\/li\u003e\n\u003cli\u003eManual solid-phase extraction (SPE) and sample cleanup\u003c\/li\u003e\n\u003cli\u003eAffinity and ion-exchange resin batch purification\u003c\/li\u003e\n\u003cli\u003ePeptide and oligonucleotide synthesis support workflows\u003c\/li\u003e\n\u003cli\u003eBuffer exchange and desalting of biological samples\u003c\/li\u003e\n\u003cli\u003eSmall-scale protein and antibody enrichment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003elabsupplies.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.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat porosity is the integrated filter?\u003c\/h3\u003e\n\u003cp\u003eEach column includes a medium-porosity filter rated 45-90 microns, suitable for retaining most chromatography resins while allowing reliable gravity flow of aqueous buffers.\u003c\/p\u003e\n\u003ch3\u003eAre these columns sterile?\u003c\/h3\u003e\n\u003cp\u003eNo. 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.\u003c\/p\u003e\n\u003ch3\u003eWhat is the column made from?\u003c\/h3\u003e\n\u003cp\u003eThe column body is molded polystyrene (PS). Confirm compatibility with your solvents before use, as polystyrene is not recommended for aggressive organic solvents.\u003c\/p\u003e\n\u003ch3\u003eHow are the columns packaged?\u003c\/h3\u003e\n\u003cp\u003eColumns ship 200 per bag (SKU 208-3367-050). Each bag is lot-numbered to support traceability requirements in accredited laboratory environments.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Caplugs® Evergreen 5\\\" Sample Preparation Columns with Medium Filters (45-90 µm), Polystyrene (PS), Non-Sterile, 200\/Bag\",\n  \"sku\": \"208-3367-050\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Caplugs® Evergreen\"\n  },\n  \"countryOfOrigin\": \"USA\",\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/labsupplies.com\/products\/208-3367-050\",\n    \"priceCurrency\": \"USD\",\n    \"price\": \"135.89\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"labsupplies.com\"\n    }\n  }\n}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What porosity is the integrated filter?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"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.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these columns sterile?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"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.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the column made from?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The column body is molded polystyrene (PS). Confirm compatibility with your solvents before use, as polystyrene is not recommended for aggressive organic solvents.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How are the columns packaged?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Columns ship 200 per bag (SKU 208-3367-050). 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