Celltreat's new multiple well plates feature an optically clear recessed, consistent borosilicate glass bottom and are ideal for cell culture and microscopy or imaging. A non-cytotoxic medical adhesive does not inhibit cell growth. Plates are labeled with alpha-numeric markings for easy identification of individual wells. Each well has a raised rim which nests into the rings on the single direction lid to prevent evaporation and limit the risk of cross contamination. Lids have a raised stacking ring for added stability when stacked.