Vacuum desiccator will hold a vacuum of 29"Hg for a period of 24 hours. Neoprene O-ring in groove of bottom section gives an excellent seal with cover. Polycarbonate cover takes 8 to 10mm tubing. Vacuum retention valve allows air to enter slowly to prevent damage to the samples inside. Removable pan holds drying agent.

Desiccator plates are polypropylene and are available for all three sizes of desiccators.