Contact Plate - Extragene , Contact Plate ( RODAC ) 65 x15mm , Pre-sterilized 50 pack of 10 Dishes (Case of 500) - RD1065S. Used in environmental studies , ex.pharmaceutical , food processing industry or hospitals , to determine levels of microbial contamination of surfaces. Produced in clean room. Material : polystyrene Plate :with gridded bottom and protect lid Size: 65 X15 mm (outside) Agar bed surface area :25 cm2 Gamma irradiated Package : 10 per sleeve ,500pcs/case