Desiccators are key to preserving items or substances susceptible to moisture damage. When safely sealed atop the ceramic desiccator plate, the desiccants beneath the plate (such as silica gel) serve to absorb the water vapor that might have affected the item.
Desiccators & plates are available in several styles. The typical lab desiccator is a round vessel composed of borosilicate glass, sometimes with a plastic base. Vacuum desiccators feature a stopcock that allows for vacuum tube insertion. Desiccator plates are invariably ceramic, but they differ in number & size of holes.
Desiccator cabinets are a more advanced, user-friendlier desiccator. With sliding shelves, see-through walls, and a sealed door that never needs greasing, desiccator cabinets are popular for labs favoring more efficient operation.