Disposable polystyrene petri dishes offer optical clarity and strength at economical prices. 65mm dish includes a molded-in grid on the lid for easy colony counting. Sterilized. Additional Info: Petri Dish With Two Compartments 90x15, Pk/10 Package Size(L x W x H): 6 X 3.5 X 3.5 (IN) Categories: Dishes , Petri HTS Code: 3926.90.9910 UNSPSC: 4.11218e+007 Country Of Origin: CHINA