Vacuum Desiccator with Polycarbonate Cover and Base, 8"/200 mm dia

Holds vacuum up to 29? Hg for 24 hours|Knurled knob provides easy handling of dome Autoclavable|These vacuum desiccators can hold a vacuum up to 29? (740 mm) Hg for 24 hours without any greasing. The top dome with molded-in knurled knob is constructed of rigid, transparent polycarbonate (PC), providing you a clear view of your sample. The lower half is made of transparent PC for increased visibility and includes a perforated polypropylene (PP) desiccator plate. An internal groove on the flange holds the silicon rubber O-ring that provides leakproof vacuum capability. A PP stopcock accepts ?? (6.4 mm) ID vacuum tubing and features a self-lubricating PTFE plug. The three-way plug allows you to create, hold, and release the vacuum. Autoclavable at 120?C for 15 minutes.