Optimum clarity for excellent top or bottom reading. - Standard size 128 x 86 mm. - Flat bottom. - 400 µl total volume per well, 50 to 200 µl recommended working volume per well. - White or black upper structure combined with either a transparent PS polymer bottom or a coverglass bottom. - Different cell culture surfaces and untreated surface available. - Rounded square wells eliminate wicking (capillary action). Optimum clarity for excellent top or bottom reading. - Standard size 128 x 86 mm. - Flat bottom. - 400 µl total volume per well, 50 to 200 µl recommended working volume per well. - White or black upper structure combined with either a transparent PS polymer bottom or a coverglass bottom. - Different cell culture surfaces and untreated surface available. - Rounded square wells eliminate wicking (capillary action).