United Scientific® Filtering Flask, Borosilicate Glass, 2000 mL

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.
A vacuum can be applied in 5-minute intervals. When restarting the vacuum, make sure to release the current vacuum to ensure proper pressure management. The pressure of the air that is removed should never exceed 600 mm Hg at any point in time.

• Borosilicate 3.3 glass
• Heavy rim
• Bolt neck with tubulation
• Avalible in various sizes