INFICON HAPSITE ER Chemical Identification System - Manual (Page 449)

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HAPSITE ER Operating Manual
NOTE: The water standard and sample temperatures should be closely
matched for similar purging characteristics such as the partition
coefficient. The readout from the temperature sensor in the probe is
displayed on the HAPSITE and PC for easy temperature monitoring.
An Internal Standard spike into the water will correct for some
temperature variations.
Figure 14-5 Standard Spiking into a Purge Vessel.
2 Prepare the standard in volumetric glassware.
2a Follow the above procedure for spiking the standard into the measured volume
of water.
2b Stopper the flask and carefully mix by gently inverting a few times.
2c Transfer the flask’s contents to the purging vessel without agitation.
2d Immerse the probe and immediately begin the analysis.