Vacuum-Pressure Indicator

Vacuum-Pressure Indicator

see at a glance whether your desiccator is under vacuum or not

Easily confirm vacuum within a Space Saver Vacuum Desiccator with the     Vacuum Pressure Indicator. The bellows collapse when there is vacuum within     the desiccator and expand under ambient atmospheric pressure. The indicator fits     on the tapered outlet of desiccator stopcock without requiring special tools.