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Re: MS oil contamination?
Posted: Tue Jul 09, 2013 11:23 am
by BCBC
Thank you. I'll let you know after I change the rough pump oil.
Re: MS oil contamination?
Posted: Thu Jul 18, 2013 12:12 pm
by BCBC
Changing diffusion pump oil and cleaning the pump did not change anything on the autotune.
Wiped the analyzer chamber again with Methylene Chloride. Still no change.
Re: MS oil contamination?
Posted: Fri Aug 02, 2013 10:59 am
by BCBC
Changing out the rough pump vacuum hose and convectron gauge did the trick. The gauge had too much oil to clean out with solvent which I have done in the past.
Re: MS oil contamination?
Posted: Fri Aug 02, 2013 11:26 am
by Don_Hilton
Good to hear you have it solved!
Re: MS oil contamination?
Posted: Thu Aug 08, 2013 12:58 am
by BCBC
Thanks for the help.
Re: MS oil contamination?
Posted: Mon Jun 21, 2021 7:10 pm
by See77777
I had a backstreaming incident as well. I cleaned everything multiple times: hexane, ipa, 1nhcl, water, lcms water, ipa, meoh. My signal is too low. Can anyone help pinpoint my issue?