This 25mL Class B graduated cylinder is made from borosilicate glass with white printed graduations every 5mL and a tolerance of ±0.05mL per DIN EN ISO 4788 standards. The cylinder features a detachable hexagonal base and protective collar plus a spout for easy pouring. The cylinder stands 6.75 inches tall with a 0.75-inch diameter and 1.6-inch base width. The borosilicate glass is autoclavable with heat tolerances including a Strain Point of 515°C, Annealing Point of 565°C, and Softening Point of 820°C. Calibrated to contain.