I am using a GC-MS triple quad (7890A/7010B) coupled with a 7697A headspace sampler and can't get the air/water check to pass.
%O2 ~ 6%
%N2 ~ 23%
In the past I would usually get high Nitrogen numbers unless I increased the split ratio, but this time I am also observing high water. What is causing high water with high nitrogen?
-The Restriction and Pressure Decay test passed on the headspace sampler.
- I can't find any leaks at the MS interface or VI inlet using air can.
Note: This system doesn't have a gas clean filter for H2O and O2.