These space saving desiccators with clear polycarbonate dome top and white polypropylene bottom provide maximum interior clearance and volume with a minimal footprint. A neoprene O-ring assures a tight seal down to 0°C without the need for grease, and will not be harmed if grease is accidentally applied. The dome top is easily lifted by the large ribbed knob. Desiccant can be placed on or under the polypropylene bottom plate which is 3.2mm (1/8") thick with 3.2mm (1/8") diameter holes for air circulation. Use with disposable or reusable desiccant.