Radiation-sterilized polystyrene dishes available with straight and beveled ridges and flat, clear lids for distortion-free viewing (25 dishes per sleeve, 20 sleeves per case)

Top and bottom edges are squared off (not rounded) to provide a firm, sure grip

• Edges are squared and bottom is flat so medium spreads evenly over the entire dish bottom
• Three venting ribs built into the underside of the lid prevent buildup of condensation that would drip onto the media
• Lid skirt is flared just enough so that it can be replaced quickly after streaking
• Lid fits loosely enough to provide air exchange, yet it's tight enough to reduce risk of aerial contamination
• Place lid upside down on dish to close off dish from outside environment