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

• Calibrated to deliver at 20 °C per ASTM E 1293 according to Class A norms

VWR® Graduated Pipettes (Mohr) are calibrated to deliver a precise volume at a particular temperature. They are used for accurate measurements of liquid volumes. Calibration and toleration standards are defined as per standard specifications and practices: ASTM E1044, ASTM E1293, ASTM E542, and ASTM E694.