lately i have negative peaks problem with my Agilent 490 Micro GC, set up is:
-helium carrier gas
-column 4m 5CB heated injector
-micro TCD detector
I analyze a gas stream from the production site, mainly nitrogen polluted with hydrocarbons.
The micro GC is installed since 1year and a half and works 24h a day, I occasionally shut it down or bake the system like one times a month.
Could be the inline GENIE 170 filter? I never changed it.
Thanx, help is appreciated
Retrieving data ...