Burette, Straight Bore, B Class, 50 mL Capacity, 0.1 mL Graduation Subdivisions This listing is for pkg. of 4. Technical Specification Item Burette, Straight Bore Material of Construction Glass Capacity 50 mL Graduation Range 0 to 50mL Graduation Subdivisions 0.1 mL Tolerance +/-0.10mL Class B Length 820 mm Stopcock Material PTFE Special Features Grade B WARNING Cancer and Reproductive Harm -