Standard leak hole, suitable for helium mass spectrometry vacuum leak detector, channel type open, positive pressure and negative pressure, leakage rate support customization, leakage rate range: 1x10-3Pam3/s ~ 5x10-10Pam3/s,
Standard leak hole, suitable for helium mass spectrometry vacuum leak detector, channel type open, positive pressure and negative pressure, leakage rate support customization, leakage rate range: 1x10-3Pam3/s ~ 5x10-10Pam3/s,
