Bottom Shape Flat Height (Metric) 14.1 mm Shape Round Certifications/Compliance Produced and tested in accordance with the EN ISO 24998:2008 Petri dish standard which includes stringent dimensional controls. Description Petri dish, 90mm, shallow Diameter (Metric) 90 mm Sterility Aseptically Manufactured Material Polystyrene Type Petri Dish No. per Case 600 No. per Pack 20 Vent 3 Unit Size Each