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® Dual-Position Caps, PE
White caps for use with VWR® and most popular brand disposable culture tubes.
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VWR® Lanced and Unlanced Cylindrical Closures, Stainless Steel
Non-contaminating, noncorrosive stainless steel cylindrical closures are available in lanced and unlanced formats.
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VWR® Flexible Safety Caps
Safety caps provide a safe and economical way to cap and recap blood collection tubes and disposable glass culture tubes, regardless of manufacturer.
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VWR® Plug-Type Caps, PE
Disposable caps are for 12 x 75 mm and 13 x 100 mm culture tubes.
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VWR® Flat Caps for Screw Cap Microtubes
Flat caps with O-ring for use with VWR® screw cap microtubes only (series 76417-xxx).
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Foam Plugs, Azer Scientific
Dense foam plugs fits both wide and narrow drosophila vials and bottles.
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VWR® Drosophila Vial Plugs, Cellulose Acetate
Bonded dense-weave cellulose acetate plugs provide a better barrier to mites with minimal shedding.
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VWR® Caps
Safe-T-Flex caps feature a unique, flexible, over-locking design that locks securely on the outside of the tube lip and can be removed with one hand.
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VWR® Customizable caps for Screw Cap Microtubes
Customizable caps with O-ring, accept colorful cap inserts to organize samples or match kit branding. For use with VWR® screw cap microtubes only (series 76417-xxx).
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Glass Storage Tube Caps, Standard Taper Outer Joint, Ace Glass Incorporated
These caps are for storage tubes
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Glass Storage Tube Cap with Glass Stopcock, Ace Glass Incorporated
These caps are for use with storage tubes
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NALGENE® Centrifuge Tube Closures, Polypropylene, Thermo Scientific
Friction-fit polypropylene closures designed for NALGENE® round or conical centrifuge tubes
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Corning® Cap, Phenolic, PTFE Liner
This cap is fabricated of a resin specially formulated to resist the effects of temperature and steam in autoclaving.
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Axygen® Mini Tube Systems (MTS) Caps, Corning
Axygen® mini tube systems are available in 8-cap or 12-cap strip format.
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Axygen® Microcentrifuge Screw Caps, Corning
These caps are compatible with all Axygen Scientific screw top microcentrifuge tubes, including both skirted and nonskirted variations of the 0.5 ml, 1.5 ml, and 2 ml microcentrifuge tubes.
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Axygen® Screw Caps for Transport Tubes
These screw caps are used for 5/10 ml transport tubes.
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Corning® Polypropylene Closures, Corning
These Corning® polypropylene closures are designed for culture tubes and flasks.
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Corning® Disposable Phenolic Threaded Screw Cap with Rubber Liners, Corning
These disposable Corning® caps are made from phenolic resin and are autoclavable at 121°C
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Corning® PBT GL 32 Caps, Corning
The red Corning® polybutylene terephthalate (PBT) high temperature caps have a GL32 thread, and can be dry heat sterilized at up to 180 °C
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KIMBLE® Open-Top Polypropylene Screw Thread Caps with Septa, DWK Lifesciences
Convenient pre-assembled caps and liners reduce the risk of contamination which makes this to use in autosamplers.
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SP Wilmad-LabGlass Disposable NMR Tube Caps, SP Industries
Manufactured from high quality polyethylene or ethylene vinyl acetate to ensure a tight seal.
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Green Caps, MP Biomedicals
Green caps fit EMPTY FASTPREP® tubes and are used in fastprep systems, to hold sample for homogenization.
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PYREX® Snap Caps, Polyethylene, Corning
These blue caps provide an economical closure for certain volumetric flasks (see 29610-004 and -285 series).
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Stainless Steel Closures, Ace Glass Incorporated
These closures are designed for use with culture tubes and flasks and are available with or without gripping finger indents
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Nalgene® HDPE High Profile Closures with Color Coders for Micro Packaging Vials, Thermo Scientific
The Thermo Scientific Nalgene HDPE closures for micro packaging vials have no o-ring to fall out or contaminate contents