Glass stopper

All sizes are with ground glass joints, heavy wall design.

Synthware® is an American company that has been designing glassware since 1992. The glassware for sale is made from high quality borosilicate 3.3 glass tubes from Europe’s top glass manufacturers, all provided by our supplier in Germany.

The chemical resistance and thermal stability of borosilicate 3.3 glassware provides chemists with an invaluable resource for conducting experiments. With a recommended continuous operating temperature range of -70 °C to 350 °C this glassware is ideal for both cryogenic and high temperature reactions.