Various implementations generally relate to a device to prevent or reduce liquid
evaporation in microplate wells using a
system of movable bars. The device includes multiple
layers, including a base with a cavity configured to place a microplate, a set of movable bars placed on the upper surface of the base and configured to open or close portions of wells of the microplate, and a cover plate placed on top of the set of movable bars, wherein the cover plate is configured to hold the multiple
layers of the device in place.