Discharge light seen from the capillary tip of ESI probe - WKB11287

SYMPTOMS

• Discharge light seen from the capillary tip of ESI probe
• Increased baseline noise

ENVIRONMENT

• All mass spectrometers

CAUSE

The capillary voltage is too high and/or the capillary tip or sample cone is dirty.

FIX or WORKAROUND

1. Decrease capillary voltage.
2. Clean up the capillary tip or sample cone.

ADDITIONAL INFORMATION

Discharged capillary voltage can lead to malfunction of the high-voltage power supply.