Test Tube Caps

Made of Polypropylene T347AQX screw cap incorporates a pierceable septum made of chemically resistant PTFE on the outside and silicone on the inside, both components being stable over a broad range of temperatures. The septum also acts as a silicone o-ring for better sample protection. It is...

GL 45 screw cap with either two or three ports that have GL 14 thread. This is a flexible modular system which has four different hose diameters available: 1.6 mm, 3.0 mm, 3.2 mm and 6.0 mm that can be connected.Sterile pressure equalization is possible through use of membrane filter. Legal...

High temperature resistivity range – shatter/crack resistant and ideal for boiling Easy ¾ turn to open and close Premium Grip Cap features molded TPE sealing rings; design ensures O-ring will never slip out of place. Striped TPE grips on cap edge enable secure handling under all...

MicroLiter vials are cleaned and packaged in a certified Class 10000 clean room according to a designed process, developed to eliminate chromatographic errors associated with vials Critical physical dimensions are fully tested, as well as chemical clea

28-410 STARLINE CAP, PP BLU

Long skirted screw caps with rubber liners. Autoclavable, black mineral-filled phenolic resin White rubber liners sealed into cap 14B white rubber (FDA classification) Deep skirt reduces risk of contaminatio

Save time and money with vial, cap, and septa kits that arrive conveniently packaged and preassembled.

Linerless closures are for use only with NALGENE narrow- and wide-mouth bottles and Erlenmeyer flasks Autoclavable Available in natural and amber

Colored screw caps for micro tubes Types A - I; for custom coding.

WHEATON® µLplate® Component Kits include one pack of 100 of µLplate Inserts and one pack of Snap Caps. Carrier µLplate sold separately. A comprehensive line of 96-well microplates for chromatography, the Plate Sampling System™ uses closures familiar to those who work...

20-400 CAP, PP YLW, OPN, UNLINED

MicroLiter® BlueMAG™ caps uniquely designed for automated GC, GC-MS and LC-MS chromatography magnetic sample transport systems. A perfect fit for headspace sampling techniques to 130°C. Offering an innovative built-in steel overlay on the outside of the polypropylene screw closure. The...

White Unlined Polypropylene Caps are known for good impact strength, cost effectiveness, and pliability. Unlined polypropylene closures are also available in black. These caps are autoclavable and are suitable for many dry products.

Stoppers with Wheaton E-Z Seals™ have a larger target diameter that makes them ideal for use with the larger-opening E-Z Vials™. These seals are ideal for filling or retrieving contents with a syringe and as closures for many instrumentation applications. The 8 mm seal is designed for...

Pre-assembled closure and septa minimize contamination from handling. Offering reliable sealing solutions for laboratory bottles, the GPI 8-425, Preassembled Closures and Septa ensures secure containment of substances. Preassembled for convenience, these closures minimize the potential for...

Use Thermo Scientific™ SureSTART™ 18 mm Precision Screw Caps with screw vials that have an 18 mm opening, including our SureSTART 10 mL and 20 mL Screw Top Headspace Vials (Level 3). Select Level 3 products for ultimate performance and sensitivity from your...

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

20-410 STARLINE CAP, PP WHT

Efficiently seal your laboratory bottles with this durable 38-400 cap. Constructed from high-quality polypropylene, it offers excellent resistance to a wide range of solvents and other chemicals, ensuring the integrity of your samples. The cap features a TFE liner, providing a superior barrier and...

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

Shallow, thin-walled aluminum cap for reinforcing XRF pellets. Commonly used in the production of pressed power sample disks for XRF but also used for OES and other analytical techniques. Forms the bottom and sides of the finished pellet. Features Makes sample disks easier to remove from the pellet...

Orange Caps fit empty 2mL FastPrep Tubes and are used in Fastprep systems to hold sample for Homogenization. Available separately for those who wish to fill their own Lysing Matrix Tubes. Colored screw cap with o-ring.