Retention time shift on an ACQUITY H-Class - WKB95183
Article number: 95183
SYMPTOMS
- Retention time shift to the right
- Peaks are co-eluting
- Pressure drops from 12500 psi to 10000 psi
- Replacing column and guard column does not help
ENVIRONMENT
- ACQUITY UPLC H-Class
CAUSE
Leaking primary pump head
FIX or WORKAROUND
Rebuild the primary pump head.
ADDITIONAL INFORMATION
For rebuild kit part numbers, see the article What are the part numbers for ACQUITY pumphead rebuild kits? - WKB5426
id95183, UPQSM, UPQSM+, UPQSMBIO, UPQSMBIO+, UPSMFTN, UPSMFTN+, UPSMFTNB+, UPSMFTNBIO