Filtering Flask, Borosilicate Glass, 125ml, Pack Of 6

Details:

Heavy wall borosilicate filtering flask includes a heavy-duty rim and a bolt neck with tubulation. Graduations are printed in durable white enamel. Manufactured from low-expansion type 1, class a borosilicate 3.3 Glass that complies with astm e438 standard specification for glasses in laboratory apparatus. It is low alkali glass with a typical chemical composition of approximately 81% silica, 13% boric oxide, 4% sodium oxide, and 2% aluminum oxide. It is virtually free of magnesia-lime-zinc group, and contains only traces of heavy metals.