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IPN 074-397-P1G
HAPSITE Smart Operating Manual
is greater than the maximum temperature of the heated zones, or if a liquid sample
has been pulled into the system, the GC and Transfer Line may need to be
replaced.
15.5.3 Contamination of the Probe and Probe Line
Contamination of the Probe and Probe Line can occur when the Probe Tip actually
touches a sample or a compound "sticks" in the Probe Line.
15.5.3.1 Symptoms
Symptoms of contamination in the probe and probe line include a high continuous
base line with the same or similar identification in Survey Mode or a persistent peak
in GC/MS Mode (possibly a carryover from a previous sample.)
15.5.3.2 Decontaminate
1 Remove the probe from the HAPSITE.
2 Hold the probe and probe line in a "U" shape.
3 Holding the probe, pour methanol from a squeeze bottle in the probe nut until
methanol is visually seen coming out of the probe line through the lemo
connector.
For safety precautions, wear nitrile gloves and safety
glasses when handling methanol. See Figure 15-1.
Figure 15-1 Pouring Methanol into Probe and Probe Line
4 With each end of the probe in a separate hand, move the probe handle up and
down until methanol comes out of either end of the probe. Repeat this a couple
of times so the methanol can dissolve any contaminants in the probe line. See
Figure 15-2.
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