Poor Tof mass accuracy - WKB65254

SYMPTOMS

• Poor mass accuracy on Tof

ENVIRONMENT

• Waters Tof system
• Vion IMS QTof

CAUSE

System calibration and lockspray setup have not been completed.

FIX or WORKAROUND

1. Check mass accuracy using leucine enkephalin.
2. Optimize peak resolution.
3. Adjust Veff to the accurate mass for the leucine enkephalin peak and save new settings.
4. Complete the calibration and lockspray setup.

ADDITIONAL INFORMATION