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.
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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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, 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 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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VWR®, Flat Caps or Plug Caps for VWR® Centrifuge Tubes
Supplier: VWR Collection
Purple PP. Sustainable design based on virgin resins.
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VWR® Socket Caps and Colour Inserts for Screw Microtubes
Supplier: VWR Collection
Customisable socket caps with O-ring, accept colourful cap inserts to organise samples or match kit branding. For use with VWR® screw cap microtubes only.
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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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Caps for storage tubes, 2D barcoded, Matrix®
Supplier: THERMO MATRIX TECHNOLOGIES
Simplify sample storage with these color-coded caps. Made from Virgin class VI medical grade PP with virgin class VI medical grade silicone O-ring.



