KIMAX* Petri Dish Set

Reinforced beaded edges resist mechanical breakage and help in centering the bottom inside the cover. Dishes remain clear after repeated use in wet or dry sterilization cycles. Covers have a fused-on, bright red ceramic enamel marking spot and inscription, including "cover"�. Bottoms have a white ceramic enamel inscription, including "bottom"�. The combination of different colors and wording permits quick and easy identification of the parts when sorting, selecting and assembling pairs. Bottom also has a vertical arrow on the side to precisely locate serial dilution starting points. Designed from Federal Specification NNN-D-1478.