Test Tube Caps

An inexpensive bottle cap for either GL-45 or GPI-38 threads that permits standard solvent or media bottles to be used as an HPLC reservoir. Caps have two holes to accomodate 1/8" tubing and one hole that accepts a standard luer inner joint. Caps are made from polypropylene and the inserts are...

For use with 18mm screw necks, 13-18mm Culture Tubes, 18-25mm Culture Tubes, 38mm Culture Tubes, 25-50ml Erlenmeyer Flasks, 125-300ml Erlenmeyer Flasks, 500-1000ml Erlenmeyer Flasks, 25-125ml DeLong Flasks and 250-6000ml DeLong Flasks. Sealed-in Silic

11 MM SNAP CAP, PE CLR, TFE/SIL LNR

(This is the Suggested Replacement for: 3332 ) Designed to fit pre-existing filling systems for other product brands 33mm polyethylene threaded cap Vented overcap has 0.2 µm PTFE membrane sealed into the peelable foil cover Sterilized by gamma irradiation Double bagged Disclaimer: This product...

MicroLiter 20mm crimp top seals are available in multiple colors and septa types.

Designed for optimal performance in various laboratory applications, this 18 mm Silver Screw Cap features a blue silicone and white PTFE lining with a thickness of 1.3 mm. Its robust construction helps ensure a secure seal, safeguarding contents from contamination or leakage. The non-reactive...

Manufactured from red PTFE silicone. Ideal for screw thread vials. Specifications: Autoclavable Material: Ptfe Silicone Size: 9mm Septa Thickness: 0.040" Case Quantity: 1000

Thermoset Urea closures are known for providing the widest range of chemical compatibility and for being the most temperature tolerant of plastic closures. Thermosetting plastics (thermosets) such as urea resins are polymers that irreversibly cure; thus urea caps and closures cannot be remelted...

38-430 STARLINE CAP, PP RED

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: 13mm Case Quantity: 1000 Color:...

Open top polypropylene screw caps supplied with PTFE faced silicone septa. Supplied in packages of 144.

Enhance the security and efficiency of your laboratory tasks with this top-tier phenolic screw cap, specially designed by MilliporeSigma. Featuring an open center, it provides a perfect fit for a variety of dispensing equipment or probes, maintaining the substance's integrity by eliminating the need...

Tip made of LDPE (Low Density Polyethylene) Extended controlled dropper tip dispenses one drop at a time Average drop size is 44uL

20-400 CAP, PP WHT, OPN, UNLINED

Closures for 9mm, 18mm, and 20mm vials. Choose from steel, aluminum, or polypropylene closures lined with PTFE / silicone.

White urea PTFE-faced foam-backed rubber liner Ideal for use with scintillation vials

Polyethylene caps are designed to fit all types of round, conical and standard bottom serum cups. Available in flat top and perforated top.  Non-perforated caps are appropriate for short-term storage and perforated caps help minimize variation caused by evaporation during processing. ...

These autoclavable caps are designed to ensure the ultimate in product safety. The liners are white styrene-butadiene faced with Teflon.

These caps are designed specifically for use on our popular line of multi-purpose sample cups and are produced from polyethylene (PE). The caps are available with a solid or cross-cut pierceable top and they snap securely in place on each of the sample cups.

Prevent leakage under demanding conditions. Thermo Scientific™ Screw Cap Microcentrifuge Tube Caps feature o-rings to form a secure seal. Optimized for secure short term storage in low temperatures, these autoclavable screw caps are available in a variety of colors, and adapt to your...

These snap caps are designed specifically for use on flared-top urine centrifuge tubes. The cap snaps snugly onto Globe Scientific urine centrifuge tubes (Thomas Nos. 1202L37, 1202L35 and 1202L42) and provides a great leak-resistant seal.

Available in multiple colors and package sizes. Ensure reliable and secure sealing for your 9mm screwthread autosampler vials with these high-quality vial caps. Featuring ETFE/Silicone Septa, the caps offer excellent chemical resistance and prevent sample contamination. The caps' robust construction...