Test tube closures ensure samples do not leak or are contaminated by providing a reliable seal. Securely mix or store small samples with these tops that allow one-handed sealing. Offered in a variety of colors, identification is made easier. Closures come in screw and snug-fit plug designs to fit any test tube opening style. Resistant to high temperatures, the versatile test tube closures can withstand heating applications while the chemical resistance guarantees limitless sample compatibility.

Diamond™ Culture Tube Caps, Globe Scientific

Supplier: Globe Scientific

These caps fit plain-end culture tubes and flasks with deLong style necks or ports.

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Screw Caps for T501 Sample Tubes, Simport Scientific

Supplier: Simport Scientific

Caps are available either with or without a silicone washer between the cap and the tube to ensure a positive leakproof seal at all temperatures.

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SVL® Caps with Aperture, Chemglass

Supplier: Chemglass

Open top SVL® caps with aperture with sealing rings.

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Plug Cap for Use with Beckman IDS Auto Track, 13mm, Globe Scientific

Supplier: Globe Scientific

This plug cap is designed for use on the Beckman Coulter IDS Specimen Automation Track (2nd Generation)

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Polypropylene Screw Caps, Linerless, Kimble Chase

Supplier: DWK Life Sciences (KIMBLE)

Polypropylene caps feature one-piece construction with a seal achieved by a unique interior design.

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SVL® Solid Caps, With PTFE Protected Seals, Chemglass

Supplier: Chemglass

Solid SVL® caps with PTFE faced liner.

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Microcentrifuge Septum Screw Caps Closure for Micrewtubes™ Centrifuge Tubes, Simport

Supplier: Simport Scientific

The 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