Pyrex® petri dishes bottom only, O.D. × H 100 mm × 20 mm; Synonyms: Corning® 3160 at Sigma-Aldrich Bottoms also have a triangular, enamel reference point for serial dilutions. Dishes withstand repeated wet or dry sterilization Easy sorting-tops marked in blue, bottoms marked in white The covered dish is not airtight. Borosilicate Glass Lab Dish Pyrex, Petri Culture Dish, 100 X 20 Beaded Edge Petri Dishes Product Type: petri dish. These flat, clear culture dishes will withstand repeated sterilization or dry). The covered dish is not Airtight. Material: glass. Model: 3160-102 Product Type: petri dish , Material: glass The bead also provides equal spacing from the walls of the bottom and cover, reducing the capillary action of condensed moisture on the sides. 100mm x 20mm Petri Dish w/Grip Ring, Sterile - Bellco Glass Dimensions: 100 mm DIA x 20 mm H , Qty/pk: 12 , Model: 3160-102