Description Kimble Kimax dishes remain clear after repeated use in wet or dry sterilization cycles Reinforced beaded edges resist mechanical breakage and help in centering the bottom inside the cover Covers have a fused-on bright red ceramic enamel marking spot and inscription, including “Cover,” Bottoms have a white ceramic enamel inscription, including “Bottom” Combination of different colors and wording permits quick and easy identification of the parts when sorting, selecting and assembling pairs Bottom has a vertical arrow on the side to precisely locate serial dilution starting points Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements