Baseline below zero.

Hi knuir,

Can you let us know what model of instrument, inlet and detector you are using. Anything special like splitter plates?

Regards

James

Hi knuir,

and please provide the details of operating  software  .

Hi Kmuir ,

please check the method and correct  it .If you have tick the Zero please untick it and inject one sample than check .

Agilent GC 7890A, FID, Split Liner.

I'm setting up the column to do Hexane injection testing. It was set up this way previously but the program had been deleted and the column removed before I started here.

Front Detector/Column which is below baseline and peak is reading upside on manual injection-HP 5 30m 0.32mm .01u

Back FID which is working fine, HP 88  30m 0.25mm 0.2um

I will mark this as assumed answered due to its age, feel free to update us with what you found or post again if this is still an issue.

Regards

James

This question has been marked as assumed answered.