These PYREX® volumetric pipettes are calibrated to Class A tolerances in accordance with ASTM E-542 and ASTM E-969.

• Reusable precision pipettes
• Color-coded markings are enameled onto the glass

PYREX® serialized/certified volumetric glassware is now tested and calibrated in an ISO/IEC 17025 certified laboratory.

Each pipette is individually serialized and supplied with a Certificate of Identification and capacity, traceable to NIST standards. These precision PYREX® volumetric pipettes are manufactured and calibrated 'To Contain' (TC: bottom line) and 'To Deliver' (TD: top line) to specifications for Class A volumetric ware.