INFICON HAPSITE ER Chemical Identification System - Manual (Page 344)

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HAPSITE ER Operating Manual
Collection Mode
Full Scan . . . . . . . . . . . . . . . . . . . . . This mode scans all the masses across a
given range. This is used for general analysis
of samples when several compounds are to
be quantified or when attempting to identify
unknowns. Full Scan is available for both
Analyze (GC/MS) and Survey modes of
analysis.
SIM. . . . . . . . . . . . . . . . . . . . . . . . . . This stands for Selected Ion Monitoring. It is
used for specific Target Compounds that are
expected to be in the sample. A higher
degree of sensitivity is provided with this
mode of collection. SIM is available for both
Analyze (GC/MS) and Survey modes of
analysis. Survey analysis in SIM Mode can
be used for leak detection.
CAUTION
Collection modes must be carefully selected to be sure
all the compounds are identified.