Optically transparent flat hole bottom. Can be used for up and down reading instruments. Flat bottom, total volume of 360 µL. The recommended working volume is 75 to 200 microliters. Get the best cell adhesion. Irreversible lid with condensation ring to reduce pollution. A separate alphanumeric code is used to identify the hole. Individually packaged. The bottom is 60% thinner than traditional polystyrene boards.