500mL Class B Volumetric Flask - Borosilicate Glass 3.3, TC Marked, ASTM E288 Standard (6-Pack) - Perfect for Chemistry Labs, School Experiments & Precise Liquid Measurements

Each Globe Glass™ volumetric flask is calibrated to meet ASTM tolerance specifications for precise measurement in solution preparation and dilution. A diamond etched graduation line indicates the calibrated capacity of each flask. Wide mouth options are available for easier filling and mixing. Globe Glass™ volumetric flasks are offered in sizes from 1mL to 2000mL and with Class A or Class B calibration tolerances. Class A volumetric flasks include a batch calibration report.