This Disposable Polystyrene Petri Dish is made from medical-grade original polystyrene. Optically clear, radiation sterilized dish features ventilation ribs on lid that allow free air circulation which helps to reduce condensation during incubation. Petri dish is sold as 30 per pack.

Dimensions:90 mm dia. x 15 mm or approximately 3.6 in dia. x 0.6 in