Check Valves for Leaks
Valve leakage due to sample particles or oxidized mercury deposits on valve seats can cause difficulty in attaining adequate vacuum conditions. To test for leakage:
- Open valves 1, 2, 3, and 8.
- If the pressure does not reach 100 µm in less than five minutes, the system has a leak. If this occurs, clean the valves. See Clean Valves .
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