Height (Metric) 16.1 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 Diameter (Metric) 90 mm Sterility Sterile Material Polystyrene Surface Treatment Non-treated Type Petri Dish Height (English) 16.1 in. No. per Case 500 No. per Pack 20 Vent 3 Unit Size Case of 500