- Discharge light seen from the capillary tip of ESI probe
- Increased baseline noise
- All mass spectrometers
The capillary voltage is too high and/or the capillary tip or sample cone is dirty.
FIX or WORKAROUND
- Decrease capillary voltage.
- Clean up the capillary tip or sample cone.
Discharged capillary voltage can lead to malfunction of the high-voltage power supply.
baseline ripple, Electrospray