Test Tube Caps

National Scientific brings to you this highly robust, 9mm black cap screw, an essential item in every scientific laboratory. Designed to ensure a tight seal on your bottles, this cap screw is instrumental in preventing leakage and contamination of samples. With its 9mm size, it can easily fit a...

As part of the prestigious National Scientific brand, our black 11mm snap caps are expertly designed to offer convenience and security for scientific applications. Crafted for durability and reliability, these caps provide an effortless snap-on feature, ensuring easy application and removal without...

Caps fit Corning media bottles, Erlenmeyer flasks and spinner flasks with standard GL threads. Standard Plug Seal Caps are autoclavable and use a linerless plug seal design for efficient sealing. Pouring Rings fit on the lips of bottles for drip-free pouring. Autoclavable Vented Caps have a 0.22...

Made of polyethylene These caps have two flexible flanges to ensure a leakproof seal. They will fit into test tubes and also in round cuvettes and centrifuge tubes.

White polypropylene closure, F217 Lined Ensure the secure storage of your scientific samples with the F217 lined Solid Top Closures. These caps are designed to provide a high degree of chemical resistance, thanks to their three-ply co-extruded liner. The liner, made of foamed and solid LDPE, is...

The Sarstedt color-coded insert is made from polypropylene material that makes it strong for a long time. Color-coded design facilitates easy identification in dark areas.

Broad variety of closures and caps in different colors Closed top closures with different septa materials for sample storage 9 mm screw cap suitable for almost all autosamplers due to its design in form of a crimp cap Thread design not standardized; avoid mixture of vials and caps from different...

Body is constructed of glass-filled PTFE with a vacuum adapter for 1/4” ID tubing Upper screw clamp holds a solvent pickup adapter or funnel 40-60 micron porosity fritted glass filter support is removable Supplied with a PTFE/propylene o-ring

Fits a variety of tubes, including 10,12, 13, 16 and 18mm sizes of blood collecting and disposable culture tubes Liquid-tight seal prevents sample evaporation. The Hexa-Flex™ Safety Cap is designed to hold under centrifugation, agitation, refrigeration and freezing Easy identification of...

These autoclavable caps are designed to ensure the ultimate in product safety.

Tefon®-faced (14B) rubber liners Autoclavable caps are designed to ensure the ultimate in product safety. The liners are made of a nontoxic white styrene-butadiene rubber and are faced with Teflon® which offers excellent chemical resistance. They are available in convenient lab pack quantities as...

Standards: AASHTO M210ASTM C490 Enhance the accuracy of your length measurements with our Prism Length Change Gage Studs. These studs are designed to provide consistent, reliable results in various physical science and engineering applications. Crafted from high-quality materials, they offer...

24-400/24-400 CONNECTION, BLK PHEN

Designed for standard screw thread vials. Available with or without septa. Easy on and easy off convenience with a twist of the cap that produces an evaporation proof seal. Larger opening provides a increased target area for needle penetration. Specifications: Size: 9mm Color: Blue Case Quantity:...

Black phenolic screw cap Poly-Seal liner is manufactured from low density polyethylene Unique cone liner design offers superior torque retention and excellent sealing characteristics It is recommended that liner be tested prior to use for leak resistant applications

With easy-to-read scale and large labeling field for easy marking in fired-on, highly durable ceramic ink. Complete system including DURAN® Pressure plus laboratory bottle with 4-port screw cap (PP) , four screw connectors (black, M* thread) and silicone seals . Connection of different hose...

Our autoclavable Foam Plugs fit both wide and narrow vials, as well as our drosophila bottles. Available in our signature Azer blue.

Screw cap made of radiation grade polypropylene Variety of colors Packaged in case of 100 or 1000

Multiport connector caps

A tight-fitting, polyethylene cap which stays in place even with a build-up of internal vaporization pressures.

The reusable KIMBLE® silicone lids stretch easily and adapt to many container sizes, improves lab safety, enhances sample management, offers a more sustainable and cost-effective solution over foils, films and other single-use covers.

Replacement CHEM-CAP® plug and control knob for CHEM-VAC™ high vacuum valves CG-951 through CG-960. Plug is sold complete with control knob and CHEM-CAP® stem. PLEASE NOTE: CONTROL KNOB IS NOT SOLD SEPARATELY ON THE CG-900 SERIES VALVE. THE 0-20mm BORE SIZE VALVE IS OUR PREVIOUS STYLE...

Foxx Life Sciences PUREGRIP® HPLC Solvent Reservoir Caps and Bottle system offer the safest and most ergonomic lab safety solution in the industry. This system come with VersaCap®, a Class VI PTFE Manifold, chemically resistant Viton O-Ring & Air Inlet Valve combined with a Foxx 25mm,...

20-400 CAP, PP WHT, CLSD, UNLINED