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Flask Closures

Flask Closures

An assortment of flask closures to accommodate a broad range specific of laboratory applications. Typically manufactured from autoclavable plastics such as polyethylene or polypropylene, flask closures are available as sterile or non-sterile, disposable or reusable, vented or unvented, and may be snap-cap or screw-cap in format. Vented flask closures commonly include a 0.2 µm filter membrane to prevent contamination of flask contents. Screw caps with plug seals are available for applications that require a tight seal, such as Thermo Scientific™ Sterilin™ Silicone Stoppers.

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Products (7)

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7 Products
Filter
Guarantee a tight, reliable seal for your glass and plastic flasks. Suitable for use in various applications. Thermo Scientific™ Sterilin™ Silicone Stoppers are suitable for use over a wide temperature range: -50° to +200°C.
Allow constant airflow and minimize chance of contamination with Thermo Scientific™ Nunc™ Sterile Flask Replacement Filter Caps.
For use with 1135 culture flasks, 1138/10 Fernbach flasks and 1141 baffled flasks.
Designed for use with Falcon 25-, 75-, and 175cm2 flasks
Designed for culture tubes and flasks with long rimless necks
Cut down on evaporation.
For filling, venting, and manipulation