Hello everyone,
I have a problem with this DB-Wax UI, 30m, 0.25, 0.25, for a long time. It has baseline dropping and rising at the same RT for all runs. It happens from 9-10 mins. I changed the inlet liner, o-ring and the gold seal, but it seems like it's not working.
Injection volume: 0.5 microliter
Method I used:
Inlet: 230C - front inlet
Oven:
40C hold for 5 mins
5C/min to 100C
50C/min to 240C
FID: 260C
Thank you,
Chau Dang