We got low sensitivity in FID after performance a P.M, (we changed all consumables) and performance back out of the column . The system is a 7890A (SSL-FID-ALS)
Find maintenance, best practice, and troubleshooting articles.
We got low sensitivity in FID after performance a P.M, (we changed all consumables) and performance back out of the column . The system is a 7890A (SSL-FID-ALS)
Can you please share what consumables changed..Jet cleaned or changed..
Hi
what about value signal is it higher than 20 ,is it unstable?
is there small peaks or no peaks after injection?
Septa, liner,o-ring, gold seal, ferrules, jet, trap of split,.. Yes, the jet is brand new.
the signal is stable (18 pA), the customer can see the traces of some peaks. He compared the peaks before P.M vs Peak after P.M and observed the low sensibilty
U replaced jet with same bore as it was earlier..Check collector body, insulator and gasket of FID...If possible, replace collector body of fid...
Yes, the jet is the same. I am goino to check out the FID..Thanks!