Advertisement

three crazy peaks

Discussions about GC and other "gas phase" separation techniques.

5 posts Page 1 of 1
Hi everybody

Today I tried to run FID checkout sample on GC 5890 W/O EPC connected with Chemstation A.10.02 but I could get three crazy peaks
first one is big size,a second one medium size and a small one.I was getting repeatidily three peaks, I mean when first group of three peaks ended just after that started to come out second group
of three peaks and again the same three peaks.
It seems smth like chemstation option because even when I didn’t inject any sample but just pressed start on GC KEYPAD it was the same situation,
Before injection the baseline was zero,I think it must be smth above zero and below 20pAb , am I right??
The detector lit and it was ok, the only thing that was not ok was purge vent because on the method it must be 40ml/min and in fact it was smth like 250 ml/min

Have you had any similar issue like this??
i appreciate every thought.

detjon
Are you sure that you're not just seeing the Agilent "checkout" signal? It repeats like that.
yeah you're looking at the test plot. change the signal to your detector (fid or whatever.)
hi mate

you were right,i had to selected the signal to Det.A so as to see online peaks,testplot is smth like internal test of GC.

thank you very much for your help

regards/detjon
Nice thing about the test plot... the reproducability is wonderful ;-)
5 posts Page 1 of 1

Who is online

In total there are 31 users online :: 0 registered, 0 hidden and 31 guests (based on users active over the past 5 minutes)
Most users ever online was 5108 on Wed Nov 05, 2025 8:51 pm

Users browsing this forum: No registered users and 31 guests

Latest Blog Posts from Separation Science

Separation Science offers free learning from the experts covering methods, applications, webinars, eSeminars, videos, tutorials for users of liquid chromatography, gas chromatography, mass spectrometry, sample preparation and related analytical techniques.

Subscribe to our eNewsletter with daily, weekly or monthly updates: Food & Beverage, Environmental, (Bio)Pharmaceutical, Bioclinical, Liquid Chromatography, Gas Chromatography and Mass Spectrometry.

Liquid Chromatography

Gas Chromatography

Mass Spectrometry