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Pyrex* Serialized/Certified, Class A, Volumetric, Color-Coded With Colored
Calibrated to Class A tolerances in accordance with ASTM E-542, and ASTM E-969. Each pipette is individually serialized and supplied with a Certificate of Identification and Capacity, traceable to NIST standards. Sizes 1 ml through 25 ml are color-coded with colored graduations enameled onto the glass.