Ms Operating Modes - Waters Xevo TQD Operator's, Overview And Maintenance Manual

MS operating modes

The following table shows the MS operating modes.
MS operating modes:
Operating mode
MS
SIR
In MS mode, the instrument can acquire data at scan speeds as high as
10,000 Da/s. Use this mode for instrument tuning and calibration before
MS/MS analysis. See the mass spectrometer's online Help for further
information.
Use the selected ion recording (SIR) mode for quantitation when you cannot
find a suitable fragment ion to perform a more specific multiple reaction
monitoring (MRM) analysis (see
quadrupole is scanned, therefore no spectrum (intensity versus mass) is
produced. The data obtained from SIR or MRM analyses derive from the
chromatogram plot (specified mass intensity versus time).
1-14 Specifications and Operating Modes
MS1
Pass all masses
Resolving (static) Pass all masses
page 1-15). In SIR and MRM modes, neither
Collision cell MS2
Resolving
(scanning)