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Ionization Mode
Item Description
EI-Fixed
Ions formed by electrons for a time set in method.
EI-Auto
Ions formed by electrons for time calculated from AGC function
CI-Fixed
Ions formed by collisions with CI reagent ions for time set in method.
CI-Auto
Ions formed by collisions with CI reagent ions for time calculated
from previous scan.
None
Selected when hardware should be turned off (i.e. solvent peak
elution)
Ion Preparation
Item Description
SIS
Selectively trap ions, range of ions or ejection of ions.
MS/MS
Isolate and dissociate an ion or ions.
AMD
Find optimum dissociation conditions for MS/MS for single parent
ion.
MS
n
Use two to five parent ions for sequential dissociation.
uSIS
Unit mass isolation of 1 to 10 ions.
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