This Eisco Labs 7-piece graduated cylinder set includes one each of 10mL, 25mL, 50mL, 100mL, 250mL, 500mL, and 1000mL capacities, all made from heavy-duty Borosilicate 3.3 glass with blue printed graduations. Each cylinder features a hexagonal base for extra stability and is fitted with a removable plastic protective collar to help prevent rolling and breakage. Class A tolerance per ASTM E1272 standards. Calibrated to contain. Autoclavable. Ideal for chemistry laboratories and classrooms requiring a complete range of precision liquid measurement vessels for solution preparation and quantitative analysis.