Scienceware® Grease-Free Vacuum Desiccators
By Bel Art ProductsChoice of white polypropylene or clear polycarbonate bottom
The space saving design of the desiccator dome provides maximum interior clearances. This strong, shatterproof desiccator with extra heavy walls will hold a full vacuum (29.9" Hg or 759mm]) at room temperature for 24 hours and will remain air tight even if not under vacuum. Features a polypropylene stopcock with a PTFE® TFR plug which turns, allowing a slow, gentle entrance of air preventing unnecessary turbulence and crucible damage. The stopcock handle is a highly visible red and has a port which accepts 1/4" (6.4mm) I.D. tubing. Has a large ribbed knob at the top center for easy lifting and a neoprene O-ring seal which does not require grease, but is not harmed if grease is used. Has a polypropylene plate 3.2mm (1/8") thick with 3.2mm (1/8") diameter perforations for air transfer. The plate rests on the retaining ledge of the bottom section and has a center hole for easy removal.