Red Push-In Plug Caps for 12 mm & 16 mm Test Tubes, 1000/Bag These Globe Scientific Plug Caps deliver a secure, snap-in seal for glass and plastic test tubes in clinical, microbiology, and general lab workflows. The bright red color aids quick visual sorting and rack identification, while the friction-fit design keeps samples contained during transport, storage, and incubation. Technical Specifications Product Type Push-In Plug Cap Volume/Size 12 mm and 16 mm tube diameters Material Polyethylene Closure/Cap Friction-fit plug, red Sterility Non-sterile Pack Size 1000 caps per bag Available Sizes 12 mm 118139R $39.20 16 mm 116142R $55.50 Applications Sealing culture and broth tubes in clinical microbiology labs Closing serum and specimen collection tubes for short-term storage Color-coding tube racks by assay or patient batch Capping reagent and dilution tubes on the bench Securing tubes during centrifugation prep and transport General academic and teaching-lab tube closure Quality & Procurement Order from labsupplies.com, an authorized Globe Scientific dealer shipping from US inventory. Each bag carries lot numbers that support traceability for CAP-, CLIA-, and ISO 15189-accredited labs. Frequently Asked Questions What tube diameters do these plug caps fit? The 118139R cap fits 12 mm tubes and the 116142R cap fits 16 mm tubes. Match the cap to your tube's outer diameter for a snug friction seal. How many caps come in each pack? Both sizes are supplied 1000 caps per bag. List prices shown are per bag. Are these caps sterile? No, these plug caps are supplied non-sterile and are intended for general laboratory closure applications. What material are the caps made from? They are molded from polyethylene, providing a flexible, low-cost push-in seal suitable for routine aqueous samples. { "@context": "https://schema.org", "@type": "Product", "name": "Globe Scientific Red Plug Caps, 12 mm & 16 mm, 1000/Bag", "brand": { "@type": "Brand", "name": "Globe Scientific" }, "material": "Polyethylene", "offers": { "@type": "AggregateOffer", "priceCurrency": "USD", "lowPrice": "39.20", "highPrice": "55.50", "offerCount": "2", "offers": [ { "@type": "Offer", "sku": "118139R", "price": "39.20", "priceCurrency": "USD" }, { "@type": "Offer", "sku": "116142R", "price": "55.50", "priceCurrency": "USD" } ] } } { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What tube diameters do these plug caps fit?", "acceptedAnswer": { "@type": "Answer", "text": "The 118139R cap fits 12 mm tubes and the 116142R cap fits 16 mm tubes. Match the cap to your tube's outer diameter for a snug friction seal." } }, { "@type": "Question", "name": "How many caps come in each pack?", "acceptedAnswer": { "@type": "Answer", "text": "Both sizes are supplied 1000 caps per bag. List prices shown are per bag." } }, { "@type": "Question", "name": "Are these caps sterile?", "acceptedAnswer": { "@type": "Answer", "text": "No, these plug caps are supplied non-sterile and are intended for general laboratory closure applications." } }, { "@type": "Question", "name": "What material are the caps made from?", "acceptedAnswer": { "@type": "Answer", "text": "They are molded from polyethylene, providing a flexible, low-cost push-in seal suitable for routine aqueous samples." } } ] }
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