User guide

Multimode Source for 6100 Series Single Quad LC/MS User Guide 49
Reference 3
Benefits of a multimode source
MM-APCI Zone
Figure 30 Graphical representation of MM-APCI zone
1 Neutral analytes and MM-ES charged analytes pass through the MM-APCI
Zone.
2 A corona is formed between the APCI corona needle and the pin.
3 Neutral analytes in or very near this gap are ionized.
4 MM-ES and MM-APCI ions are merged and follow the electric field into the
mass spectrometer.