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.
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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Stoppers for standard ground joints, glass
Supplier: GLASWARENFABRIK KARL HECHT
Stopper, DURAN®, hollow, 29/32, Clear glass
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Connection stopper
Supplier: GERHARDT
This connection stopper is made from viton and is suitable for distribution heads with connection pipe Ø 32,7 mm.
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Rubber stoppers, KIMBLE®
Supplier: DWK Life Sciences
Designed for aluminum seal finish vials.
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Hollow Stoppers [ST]
Supplier: witeg Labortechnik
ST-hollow stoppers, with extra long stem, for BOD-bottles, made of borosilicate glass.
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Stoppers for conical ground joints
Supplier: Edwin Mraz Kunststoff-Erzeugnisse GmbH
HDPE stopper, white with red cover plate. Hollow, with sealing rings and octagonal head.
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Ceaprene stopper
Supplier: Greiner Bio-One
This ceaprene stopper is made of water-repellent material.
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Cellulose stoppers, Steristoppers®
Supplier: HERENZ HEINZ
Original Steristoppers® have been proved as an excellent sealing for microbiological samples and tissue cultures in test tubes and Erlenmeyer flasks. They are in constant use in many world famous microbiological laboratories.
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Silicone foam stoppers, conical
Supplier: KOEHLER TECHNISCHE PRODUKTEN
These coloured conical stoppers are made from silicone foam.
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PE stoppers, DURAN®
Supplier: DWK Life Sciences
These PE stoppers have an ergonomic grip that makes the opening and closing of the flasks easier and more secure. Coloured inserts in the different sizes of stoppers allow the easy identification of the corresponding ground (NS/TS) neck size.
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Glass Stopper, Octagonal
Supplier: NEUBERT VOLUME GLASSWAERE
Solid glass stopper made of borosilicate glass 3.3 octagonal.