FID SPIKES

Hi cberdugo,

In looking at the data you sent, your signal and response is very low. Some of the peaks you are integrating are less than a pico amp in response. Working in this range will never yield an acceptable signal to noise ratio. What you are interpreting as spikes may just be normal baseline fluctuations. I would work at increasing response of your peaks of interest . If its a split method, decrease the split. I see nothing unusual here. The signal level with FID off is normal as well. If you want to respond with method parameters, the community may be able to make suggestions to improve the signal.

Regards

James

Following up on James' response, I would agree and also add that you might want to run the FID checkout sample. The purpose would be to see if the response you get, both in terms of peak shape and peak area, is comparable to the checkout chromatogram (usually this is included with the checkout sample, but should also be in your operation and installation manuals).

Hi cberdugo,

Were you able to resolve the signal issues or have any additional information that others may benefit from, please come back to this post to provide an update.

James

I decrease the split ratio and the spikes were gone.

Thanks,