INFICON HAPSITE ER Chemical Identification System - Manual (Page 308)

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HAPSITE ER Operating Manual
7 Enter the three largest peaks in the boxes under the Mass (it may also be
shown as Ma...) in the control panel box.
Figure 9-20 . For the Benzene
example, 78, 77 and 51 are entered.
8 Check the box to the left of the mass or press ENTER. This will plot the mass
in the RIC window and create a new row in the Control Panel for an additional
mass to be entered. See
Figure 9-25 .
Figure 9-25 Entering Masses in Control Panel
9 As soon as the first mass is checked, a RIC plot will open directly under the TIC
plot. See
Figure 9-26 .
NOTE: This RIC window can be closed by un-checking the masses selected in the
Control Panel.
Figure 9-26 RIC Plot for Suspected Benzene One Mass Selected
10 The compound may be present in the unknown sample if all three masses
(peaks) align in the RIC plot. Use F7 NIST program to confirm identification of
the suspected compound. See
Figure 9-27 .
NOTE: There may or may not be a peak visible in the TIC plot.