I installed a second column on my machine and wrote a method. My baseline is below zero and my injection is appearing upside down. How do I fix this?
Can you let us know what model of instrument, inlet and detector you are using. Anything special like splitter plates?
and please provide the details of operating software .
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
Hi Kmuir ,
please check the method and correct it .If you have tick the Zero please untick it and inject one sample than check .
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.
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