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- Posts: 23
- Joined: Wed Aug 02, 2017 4:18 pm
I've cleaned the source, replaced filaments, all that good stuff and when I go to autotune, the relative abundance of the 219m/z PFTBA peak sits right around 40% for both filaments (the recommendations I've seen say it should be >65%, on our other 5975 it's usually >80%) and the 502m/z peak sits right around 3% which is on the low end of recommended spec. My PI seems to think it's the electron multiplier, so mainly I'm looking for ways to troubleshoot that specific part without just replacing it (not currently in the budget). Also is there any way to know if the quad is fouled without opening it up?
I'm venting right now to RE-clean the source and see if maybe I gummed up the filaments, but my bet is on the EM as well.