2695 Separations Module: Peak retention time delayed, but returned in the next run - WKB101785
Article number: 101785
SYMPTOMS
- Peak retention time delayed, but returned in the next run
ENVIRONMENT
- 2695 Separations Module
CAUSE
Pump flow differs from the set value
FIX or WORKAROUND
- Acquire pressure fluctuations as data and confirm the pressure fluctuation when the same issue occurs next time.
In Empower, how can I check system pressure on an Alliance 2695 after a run is completed? - WKB2879
- There may be a problem with the check valve, clean or replace it to see if any improvements.
How to clean check valves on a 2695 Separations Module Alliance and ACQUITY UPLC- WKB5864
Video - How to replace the 2695 check valve - Check the flow rate with a graduated cylinder at each of the column inlet and detector outlet (There is a possibility that the flow rate seems normal because there is not always an abnormality)
ADDITIONAL INFORMATION