M-Class nano chromatography poor - WKB124229
Article number: 124229
SYMPTOMS
- Chromatography poor
- MS signal height lowered
- Peaks broad and appear later than expected in run
ENVIRONMENT
- ACQUITY UPLC M-Class
- nanoACQUITY UPLC
CAUSE
Autozero incorrect, showing negative flow during set pressure diagnostic
FIX or WORKAROUND
Run autozero on affected pumps.
ADDITIONAL INFORMATION
id124229, UPMASM, UPMBSM, UPMSMFL, UPNAYXPMP, UPNSAMMGR, UPNSOLMGR