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®, Closures

Supplier: VWR Collection

These closures are suitable for test and culture tubes.

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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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J.T.Baker®, Caps for Microtube Racks

Supplier: Avantor

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

Sustainable Options Available

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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: White

Sustainable Options Available

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VWR®, Caps for Disposable Culture and Sample Tubes

Supplier: VWR BRAND PRIVATE LABEL USA

Cap for culture and test tube, PE, PE, VWR®, Colour: Natural, Closure type: Dual position type, For tubes: 12 mm

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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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Caps for microcentrifuge tubes, tamper evident, Micrewtube®

Supplier: SIMPORT SCIENTIFIC

Screw caps. tamper evident, Without loop, PP, MicrewLock®, Colour: Natural

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Screw caps with rubber liner, KIMBLE®

Supplier: KIMBLEKONTES

Phenolic cap material and cemented-in rubber liner are resistant to the effects of repeated autoclaving. Designed from ASTM Specification E982.

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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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Screw cap with septum for sample tubes

Supplier: SIMPORT SCIENTIFIC

This aqua colour 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.

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Screw cap with septum for microcentrifuge tubes, Micrewtube™

Supplier: SIMPORT SCIENTIFIC

This 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.