Available in 6, 12, 24, 48 and 96 well treated or non-treated configurations 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 reduce evaporation and limit the risk of cross contamination Lids have a stacking ring for added stability when handling tall stacks of plates All multiple well plates are packaged sterile (gamma irradiated) 12 well Non-treated Plate, Sterile