Designed for repeated laboratory use, United Scientific™ CrystalClear™ crystallizing dishes are made from industrial grade borosilicate 3.3 glass. Dishes are autoclavable, with excellent chemical resistance, a low temperature gradient, and can withstand high temperatures and thermal shocks. Reinforced rims are fire-polished to reduce chipping. Include printed marking spots. Features a flat bottom and sides. Autoclavable at 121°C. Strain Point: -515°C. Annealing Point: 565°C. Softening Point: 820°C.