{"product_id":"diamond-culture-tube-cap-16mm","title":"16mm Diamond Culture Tube Cap PP | Globe Scientific","description":"\u003cp\u003eMolded from durable, autoclavable polypropylene, the \u003cstrong\u003e16mm Diamond Culture Tube Cap\u003c\/strong\u003e from Globe Scientific fits plain-end culture tubes and flasks with DeLong-style necks, providing contamination protection and color-coded sample identification.\u003c\/p\u003e\n\u003cp\u003eAvailable in five colors for rapid visual differentiation, these caps enable laboratories managing multiple sample types to reduce mislabeling errors during high-throughput processing workflows.\u003c\/p\u003e\n\u003cp\u003eDesigned as a reusable, autoclavable replacement for foil or cotton closures, Diamond Culture Tube Caps deliver consistent fit and reliable sealing across thousands of capping cycles without cracking or deformation.\u003c\/p\u003e\n\u003ch2\u003e16mm Culture Tube Cap Features and Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest For:\u003c\/strong\u003e Capping 16mm plain-end glass culture tubes and DeLong-neck flasks for contamination protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polypropylene (PP) — autoclavable at 121°C, chemically resistant to common laboratory solvents\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColors:\u003c\/strong\u003e Blue, Clear, Green, Red, Yellow — enables visual color-coding for sample organization\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit:\u003c\/strong\u003e 16mm tubes — diamond-grip design provides secure, non-slip fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable:\u003c\/strong\u003e Withstands repeated autoclaving and handling without degradation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAvailable Colors and Pack Quantities\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd; margin: 1em 0;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f5f5f5; text-align: left; font-weight: 600;\"\u003eSKU\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f5f5f5; text-align: left; font-weight: 600;\"\u003eFits Tube Size\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f5f5f5; text-align: left; font-weight: 600;\"\u003eColor\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f5f5f5; text-align: left; font-weight: 600;\"\u003ePack Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e118152B\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e16mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eBlue\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eCase of 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003e118152B-100\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003e16mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003eBlue\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003eBag of 100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003e118152C\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003e16mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003eClear\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003eCase of 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e118152C-100\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e16mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eClear\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eBag of 100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e118152G\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e16mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eGreen\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eCase of 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003e118152G-100\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003e16mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003eGreen\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003eBag of 100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003e118152R\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003e16mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003eRed\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003eCase of 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e118152R-100\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e16mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eRed\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eBag of 100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e118152Y\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e16mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eYellow\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eCase of 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003e118152Y-100\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003e16mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003eYellow\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f0f7ff;\"\u003eBag of 100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eLaboratory Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCapping glass culture tubes during bacterial and fungal culture incubation to prevent airborne contamination\u003c\/li\u003e\n\u003cli\u003eColor-coding sample tubes by experiment, patient, or reagent type for rapid visual identification\u003c\/li\u003e\n\u003cli\u003eReplacing aluminum foil and cotton plug closures with a reusable, autoclavable cap that reduces consumable waste\u003c\/li\u003e\n\u003cli\u003eSealing DeLong-neck flasks during media preparation and storage in microbiology laboratories\u003c\/li\u003e\n\u003cli\u003eProtecting tube contents during transport between laboratory departments and storage locations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality Assurance and Compliance\u003c\/h2\u003e\n\u003cp\u003eGlobe Scientific manufactures Diamond Culture Tube Caps from virgin polypropylene under ISO 9001 certified quality systems. Each cap undergoes dimensional verification to ensure consistent fit across 16mm tube diameters from multiple manufacturers. The autoclavable construction eliminates the recurring cost of disposable closures.\u003c\/p\u003e\n\u003ch2\u003eCulture Tube Cap Comparison: Why Choose Globe Scientific?\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd; margin: 1em 0;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f5f5f5; text-align: left; font-weight: 600;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f5f5f5; text-align: left; font-weight: 600;\"\u003eGlobe Scientific 16mm Diamond Cap\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px 12px; background: #f5f5f5; text-align: left; font-weight: 600;\"\u003eTypical Competitor\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003ePolypropylene — autoclavable\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003ePE or silicone (often not autoclavable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eColor Options\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e5 colors per size\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eLimited — often clear only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003ePricing\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eBelow retail pricing\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eFull retail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eShips From\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eUSA inventory\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eVaries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eAuthorized Dealer\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eYes — LabSupplies.com\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eOften third-party reseller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eVolume Discounts and Institutional Pricing\u003c\/h2\u003e\n\u003cp\u003eLabSupplies.com offers tiered quantity pricing for academic and research institutions. As an authorized dealer, we ship directly from USA inventory.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat size culture tubes do 16mm caps fit?\u003c\/h3\u003e\n\u003cp\u003eGlobe Scientific 16mm Diamond Culture Tube Caps fit plain-end glass culture tubes with a 16mm outer diameter. They also fit flasks with DeLong-style necks or ports of the same diameter. The caps provide a secure, non-slip fit that prevents contamination during incubation and storage.\u003c\/p\u003e\n\u003ch3\u003eCan polypropylene culture tube caps be autoclaved?\u003c\/h3\u003e\n\u003cp\u003eYes, Globe Scientific Diamond Culture Tube Caps are manufactured from autoclavable polypropylene. They withstand repeated autoclaving at 121°C and 15 psi without cracking, warping, or losing their dimensional fit on 16mm tubes.\u003c\/p\u003e\n\u003ch3\u003eWhat colors are available for 16mm culture tube caps?\u003c\/h3\u003e\n\u003cp\u003eLabSupplies.com stocks Globe Scientific 16mm Diamond Culture Tube Caps in five colors: Blue, Clear, Green, Red, and Yellow. Both bag of 100 and case of 1000 quantities are available for each color.\u003c\/p\u003e\n\u003cp\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"16mm Diamond Culture Tube Cap PP | Globe Scientific\",\"description\":\"16mm polypropylene culture tube caps in 5 colors. Autoclavable. Fits plain-end tubes and DeLong necks. 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