Petri dishes are one of the most important products in a bacteriological laboratory and within Greiner Bio-One they are produced in sizes of 35, 60, 94, 100 and 145 mm. Manufactured from high-grade polystyrene the petri dishes have exceptional optical clarity for microscopic analysis as well as heat resistance for use with hot agar. The dishes are available in both vented and non-vented design and the standard round design is supplemented by a square-profile dish and the OneWell Plate™. To enable parallel testing of a single sample using different agars, divided dishes with two or three compartments are available. The product range is completed by contact dishes and graduated germ count dishes.