Brief Instruction:

Vacuum Desiccator is basically had same outlook as non-vacuum desiccator. A stopcock will be included at the cover to permit the desiccator to be evacuated. A vacuum hose will be connected to the stopcock in order to remove excess air from the inside of the chamber. 

P.S : We got sell desiccator parts(cover, porcelain plate, glass stopcock) separately. Pls do not hesitate to contact us for futher information.