Why do my FID peaks shift on the 8890 compared to the 6890?

I completed the inlet leak test and it passed and I also completed the FID jet restriction test and it passed.  Yet, when I compare scans on the 8890 the peaks shift more compared to the same injections on my 6890.  Does anyone have any thought on this.  I have attached some scans.

  • Hi Kenforce, 

    In this case, I would run the pressure decay test, as you could have a small leak that is causing the inconsistency.  I would also consider increasing your oven equilibration time by a 0.5min or so, just to ensure the column phase is at a consistent temperature.   I'm happy to review both methods to see if anything else jumps out.  

    Abbey

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