This 250mL Berzelius tall-form beaker is made from heavy-duty borosilicate 3.3 glass with white enamel markings and 25mL graduations labeled every 50mL. The tall-form design with uniform walls is ideal for heating and stirring during titrations. The beaker has no spout, suitable for containing and storing samples. Conforms to DIN 12231 and ISO 3819 standards. Microwavable and autoclavable with heat tolerances including a Strain Point of 515°C, Annealing Point of 565°C, and Softening Point of 820°C.