Bottle Closures
Bottle closures allow for safe transfer of liquid media by securely closing jars or roller bottles. Various liners offer additional solvent resistance while permeable styles successfully filter during gas exchange and media sterilization procedures. Protect samples even under harsh freeze-drying lyophilization or autoclaving conditions with temperature tolerant caps. Compression caps for microscale reaction containers support stable observations. Disposable and reusable threaded caps are offered in many colors with or without septas.
Black Phenolic Dropper Assembly, Qorpak®
Dropper assemblies feature a glass tube with black polypropylene closure and rubber squeeze bulb
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Pulpvinyl Bakelite Jar Caps
Pulpvinyl liners resist most chemical reagents. Packages of 12.
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Qorpak® Black Phenolic Screw Caps, Pulp/Vinyl Liner
Phenolic caps with pulp and vinyl liners are perfect for general use
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Screw Caps for Specimen Jars
These steel caps fit flint glass, screw cap wide mouth specimen jars. They are finished in black enamel and have a chemically resistant inner liner.
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Black Phenolic Screw Caps, Polyethylene Liner, Qorpak®
Caps with solid PE liners offer good chemical resistance and a low moisture vapor transmission rate and are for great polish remover and higher concentration acids & alkalis