VWR® flasks are manufactured from ASTM E 438, Type 1, Class B Borosilicate 3.3 glass.

• Manufactured per ASTM E 288 Class specification
• White diamond enamel graduation lines
• Calibrated 'to Contain'

VWR® Volumetric Flasks are used for precise dilutions and preparations of standard solutions. These flat bottom flasks have a pear-shaped lower area with a long neck. Calibration and tolerances are in compliance to standards: ASTM E288, ASTM E542, and ASTM E792.