{"product_id":"globe-cap-116142y","title":"Test Tube Plug Caps, Yellow Polyethylene — 12 mm \u0026 16 mm, 1000\/Bag | Globe Scientific","description":"\u003ch2\u003eYellow Plug Caps for 12 mm and 16 mm Test Tubes, 1000\/Bag\u003c\/h2\u003e\n\u003cp\u003eThese \u003cstrong\u003eGlobe Scientific Yellow Plug Caps\u003c\/strong\u003e provide a secure snap-fit seal for standard glass and plastic test tubes used in microbiology, clinical sample storage, and general benchtop workflows. Bright yellow coloring supports rapid visual sorting and color-coded sample tracking across high-throughput racks. Each cap pushes firmly into the tube rim to limit evaporation and cross-contamination during handling and short-term storage.\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\u003ePlug Cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\/Size\u003c\/td\u003e\n\u003ctd\u003e12 mm and 16 mm tube diameters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolyethylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure\/Cap\u003c\/td\u003e\n\u003ctd\u003ePush-in plug, snap-fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eYellow\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 per bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eAvailable Sizes\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003ePrice (per bag of 1000)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12 mm\u003c\/td\u003e\n\u003ctd\u003e118139Y\u003c\/td\u003e\n\u003ctd\u003e$39.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e16 mm\u003c\/td\u003e\n\u003ctd\u003e116142Y\u003c\/td\u003e\n\u003ctd\u003e$55.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSealing microbiology culture tubes during incubation and transport\u003c\/li\u003e\n\u003cli\u003eColor-coding patient or batch samples in clinical and reference labs\u003c\/li\u003e\n\u003cli\u003eCapping serological and dilution tubes on the bench\u003c\/li\u003e\n\u003cli\u003eShort-term storage of aqueous reagents and standards\u003c\/li\u003e\n\u003cli\u003eOrganizing tube racks by assay or workflow stage\u003c\/li\u003e\n\u003cli\u003eLimiting evaporation in stored aliquots between processing steps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003elabsupplies.com is an authorized Globe Scientific dealer shipping from US inventory. Each bag carries lot numbers that support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available for volume purchases across both sizes.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat tube diameters do these plug caps fit?\u003c\/h3\u003e\n\u003cp\u003eTwo sizes are offered: a 12 mm cap (SKU 118139Y) and a 16 mm cap (SKU 116142Y). Select the size matching your tube's outer rim diameter for a snug snap-fit seal.\u003c\/p\u003e\n\u003ch3\u003eAre these caps sterile?\u003c\/h3\u003e\n\u003cp\u003eNo, the caps are supplied non-sterile. For sterile workflows, autoclave or sanitize per your validated lab protocol before use, confirming polyethylene tolerance for your method.\u003c\/p\u003e\n\u003ch3\u003eHow are the caps packaged and sold?\u003c\/h3\u003e\n\u003cp\u003eBoth sizes ship in bags of 1000, and the listed price is per bag. Lot numbers on each bag support sample traceability requirements.\u003c\/p\u003e\n\u003ch3\u003eCan the yellow color be used for sample coding?\u003c\/h3\u003e\n\u003cp\u003eYes. The consistent bright yellow finish makes these caps well suited to color-coded organization by assay, batch, or processing stage in busy racks.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Globe Scientific Yellow Plug Caps, 12 mm \u0026 16 mm, 1000\/Bag\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Globe Scientific\"},\n  \"description\": \"Yellow polyethylene push-in plug caps for 12 mm and 16 mm test tubes, snap-fit closure, 1000 per bag.\",\n  \"offers\": {\n    \"@type\": \"AggregateOffer\",\n    \"priceCurrency\": \"USD\",\n    \"lowPrice\": \"39.20\",\n    \"highPrice\": \"55.50\",\n    \"offerCount\": \"2\",\n    \"offers\": [\n      {\"@type\": \"Offer\", \"sku\": \"118139Y\", \"price\": \"39.20\", \"priceCurrency\": \"USD\"},\n      {\"@type\": \"Offer\", \"sku\": \"116142Y\", \"price\": \"55.50\", \"priceCurrency\": \"USD\"}\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    {\"@type\": \"Question\", \"name\": \"What tube diameters do these plug caps fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Two sizes are offered: a 12 mm cap (SKU 118139Y) and a 16 mm cap (SKU 116142Y). 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