Stoppers

Leak-proof, solid stoppers seal bottles, flasks, vials, and even tubing to prevent liquids and gases escaping. Multi-hole styles provide the limited flow stability conditions desired in order to prevent air bubble build up. With a slightly tapered design, different diameter sized stoppers are inserted in labware for a snug fit that still allows easy removal. The closures are manufactured in different materials for accurate resistance to harsh contents and can maintain vacuum atmosphere.

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Ultrapure lyophilisation stopper, WHEATON®

Supplier: DWK Life Sciences

This ultrapure lyophilization stopper is a very low moisture adsortion stopper. Manufactured from an ultra pure bromobutyl formulation with extremely high chemical purity and low gas permeability.

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Rubber stoppers for lyophilisation, WHEATON®

Supplier: DWK Life Sciences

Ultra pure chlorobutyl-isoprene rubber stoppers for lyophilisation.

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Plugs, PE

Supplier: MACHEREY-NAGEL

PE plugs with a diaphragm for safe penetration of the needle are used for the shell vials.

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Stoppers, for test tubes

Supplier: RATIOLAB

PE.

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Silicone stoppers

Supplier: Brand

These stoppers are made from natural coloured silicone.

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Silicone stoppers

Supplier: HIRSCHMANN

SILICOSEN® and BIO-SILICO® sterile stoppers are manufactured in a special process and have regular pores, thus making them ideal for the preparation and sterilisation of culture media. The uniform pores and good permeability to air make the stoppers ideally suitable for cultivation of aerobic microorganisms.

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WHEATON® Premium Rubber Stoppers

Supplier: DWK Life Sciences

Ultra-pure rubber stoppers made from a bromobutyl rubber compound containing the highest level of chemical purity. These stoppers demonstrate very low levels of moisture absorption and extractables.

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Rubber Stoppers for Use with GV 050, GV 100 and MV 050 Vacuum Filtration Devices

Supplier: Whatman products (Cytiva)

Rubber stopper

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Stoppers, rubber

Supplier: Brand

Natural rubber, red.

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Stoppers for standard ground joints

Supplier: BURKLE

Stopper made of PE, hollow with sealing rings and octagonal top.

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WHEATON® Rubber Stoppers

Supplier: DWK Life Sciences

Stoppers of various styles, sizes and rubber formulations.

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Stoppers, straight plug, Corning® Gosselin™

Supplier: Corning

Material LDPE.

Sustainable Options Available

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Silicone rubber stoppers, conical

Supplier: BURKLE

These conical silicone rubber stoppers are translucent, chemically-biologically neutral, food-safe according to BfR Recommendation XV and FDA § 177.2600.