INFICON HAPSITE ER Chemical Identification System User Manual

Page 378

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HAPSITE ER Operating Manual

Sensitivity . . . . . . . . . . . . . . . . . . . 1-30, used in model peak perception ranges:

30, 15, 10, 3, 1. As the value for this
parameter increases, increasingly noisy and
broad peaks are sought at the expense of
analysis time and increased risk of false
positives. An increase in the sensitivity will
extract broader peaks, resulting in an
increase in the extraction of smaller and
noisier peaks.

Resolution. . . . . . . . . . . . . . . . . . . . High/Medium/Low, Default is Medium: As the

level of resolution goes up, the program
separates peaks that are closer together.

If Analyze Region is selected, see

Figure 11-31

, the AMDIS is directed to only

search in the scan range selected. This is for specialized use and does not need
to be utilized for normal usage. The default of Analyze Region off (i.e., unchecked)
will search the entire range specified by Low Mass and High Mass.

Figure 11-31 Analyze Region

When setting up the AMDIS library for qualitative analysis the HAPSITE.msl is the
default library for the system. See

Figure 11-32

.

Figure 11-32 The Libraries

To view other library choices, select the Browse button, refer to

Figure 11-32

. There

are several small and specific libraries in addition to the HAPSITE.MSL See

Figure

11-33

. Many of the compounds found in these small libraries, that can be detected

by the HAPSITE, are incorporated in the HAPSITE.MSL file.

NOTE: INFICON recommends using HAPSITE.MSL.

AMDIS Libraries:

HAPSITE.MSL

NISTEPA.MSL

NISTCW.MSL

NISTFDA.MSL

NISTFF.MSL

NISTDRUG.MSL

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