apologizing for frequently wondering but I first faced this problem.
GC produces a signal without turning on the FID Detector!? Please look at the attached photo.
![](/resized-image/__size/1280x960/__key/communityserver-discussions-components-files/24/pastedimage1696680930715v1.jpeg)
![](/resized-image/__size/1280x960/__key/communityserver-discussions-components-files/24/pastedimage1696680930716v2.jpeg)
![](/resized-image/__size/1280x960/__key/communityserver-discussions-components-files/24/pastedimage1696680930716v3.jpeg)
![](/resized-image/__size/1280x960/__key/communityserver-discussions-components-files/24/pastedimage1696680930717v4.jpeg)
After turning on the detector and then conditioning the column while the instrument waiting for injection, the baseline is downward appeared as in the attached image.
![](/resized-image/__size/1280x960/__key/communityserver-discussions-components-files/24/pastedimage1696680930717v5.jpeg)
for considering my type of sample is highly concentrated organic Solvents.
I assume that the carbon is scaled at the jet but I want to ensure from experts before I commence.