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HAPSITE ER Operating Manual
7 When the TIC increases 2 to 3 times the baseline level, move the probe away
from the sample. A peak may appear if the compound concentration is greater
than 1 ppm. A compound identification may also be present on the HAPSITE
screen. (See Figure 6-7.)
Figure 6-7 Peak in Survey
NOTE: No response may indicate either the compound present is less than the
detection limit, or that no detectable compound is present.
8 Monitor the TIC for guidance. If the TIC approaches 60 million, move the probe
away from the sample to avoid saturation. If the system is saturated, there will
also be red lines in the peak on the laptop.
9 If the TIC does not increase, hold the probe over the sample of interest for up
to a minute. If the TIC does not increase after a full minute, move the probe
away from the sample.
10 Monitor the TIC until it decreases to the initial background level that was noted
in Step 6. (See Figure 6-8.)
Figure 6-8 TIC Decreasing
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