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EMS Technical Data Sheets
Vacuum Pressure Indicator
EMS Catalog #71242-01
Instructions
This Vacuum-Pressure Indicator fits between the desiccator dome and the desiccator stopcock. It slips easily onto the tapered outlet of the dome and into the standard stopcock without the use any other tools.
The thermo-plastic elastometer expands under ambient atmospheric pressure and collapses when there is a negative pressure vacuum in the desiccator.