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IPN 074-397-P1G
HAPSITE Smart Operating Manual
End Mass. . . . . . . . . . . . . . . . . . . . . The mass at which the Mass Spectrometer
will end a scan. The end mass can be set
from 1-300 AMU.
NOTE: End the scan at least 2 AMU above
any mass used for compound
identification. End as low as possible
to decrease the scan time to collect
as many scans as possible.
Skip Mass Range . . . . . . . . . . . . . . This function is not yet implemented in the
software. This entry box accepts entry of
individual masses or mass ranges to be
skipped by the Mass Spectrometer during
scanning. Masses can be entered in the form
of single masses, e.g. 18,28,36 or in the form
of a range, e.g. 18-36 or a mixture of single
masses and ranges. The masses entered do
need to be within the Start Mass and End
Mass to be included in the Method. Entry of
a mass outside of the Start/End Mass range
will cause an error that must be fixed before
the Method can be saved and run.
Dwell Time. . . . . . . . . . . . . . . . . . . . The Dwell Time is the length of time the Mass
Spectrometer will sample data at each
sampling point. The longer the Dwell Time,
the better the signal to noise ratio of the
Analyte.
11.7 SIM Page
Figure 11-23 shows the SIM page, which is presented with different content
depending on the mode of analysis — GC/MS or Survey (Figure 11-24). Selected
Ion Monitoring (SIM) uses a set or sets of specific masses to scan with the highest
sensitivity for known compounds.
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