Test/Sample Tube Closures

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.

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VWR® Safe-T-Flex, Caps for Test Tubes

Supplier: VWR Collection

Safe-T-Flex caps feature a unique, flexible, over-locking design, locking securely on the outside of the tube lip and can be removed with one hand. A tight seal ensures sample integrity and prevents spillage or evaporation of serum samples. This special seal protects against the aerosols of highly infectious organisms such as TB and the HTLV-III virus. They are colour coded for easy specimen identification and to help guard against cross-contamination. The top of each cap can also be numbered or labelled with indelible ink. Self-locking cap holds firmly in any position and keeps contents secure while in transit. Liquid-tight seal withstands centrifugation, agitation, refrigeration and freezing.

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VWR® Screw Caps for Culture Tubes

Supplier: VWR Collection

Screw cap with seal liner, VWR®, Colour: Black, Thread: 15-415

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VWR®, Closures

Supplier: VWR Collection

These closures are suitable for test and culture tubes.

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J.T.Baker®, Caps for Microtube Racks

Supplier: Avantor

Strip of 8 plug caps, J.T.Baker®, Colour: Clear

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VWR®, Flat Screw Caps for Microcentrifuge Tubes

Supplier: VWR Collection

Flat screw cap with O-ring for microcentrifuge tubes, VWR®, Colour: Red

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Screw caps for internal thread sample tubes

Supplier: Simport Scientific

These polypropylene screw caps are to be used with T500 series internal thread sample tubes.

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Caps, LABOCAP, with grip

Supplier: LUDI

Aluminium.

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Caps, LABOCAP, without grip

Supplier: LUDI

Made of anodised aluminum with stainless steel spring clip.

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Screw caps for high recovery vials, E-Z Ex-Traction™, WHEATON®

Supplier: DWK Life Sciences

Choice of black phenolic, white polypropylene or urea screw caps

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Laboratory screw joints with GL thread, BOLA

Supplier: Bohlender

Red screw cap made of glass-fibre reinforced ETFE, inner parts consisting of a v-ring (ETFE), a tapered ring and a sealing ring (both PTFE) as well as an o-ring (FKM) for tubing diameters under 3 mm, (not exposed to the medium). The medium is only exposed to PTFE.

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Caps for test/culture tubes without rim

Supplier: LUDI

Made of anodised aluminium.

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Mini tube systems (MTS) caps, Axygen®

Supplier: Corning

Axygen® mini tube systems are available in 8-cap or 12-cap strip format.

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Screw caps for T501 sample tubes

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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Depyrogenated aluminum caps

Supplier: FUJIFILM WAKO CHEMICALS

These depyrogenated aluminum caps assists in reducing the chance of contamination, preventing any additional substances or material from entering the testing tubes.