Appendix b calibrating gas mixtures, B.1 acquisition, preparation, and handling, Appendix b – INFICON HAPSITE Smart Plus Chemical Identification System User Manual
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HAPSITE Smart Plus Operating Manual
Appendix B
Calibrating Gas Mixtures
B.1 Acquisition, Preparation, and Handling
WARNING
Failure to calibrate the instrument may lead to inaccurate
identification and quantification of compounds being
sampled.
WARNING
When using chemicals, wear appropriate PPE according
to MSDS and take recommended precautions (fume
hood, etc.)
The HAPSITE (or any GCMS instrument) must be calibrated at one or more
concentration levels of the organic compound(s) of interest for quantitative analysis
of these target compounds. In the case of the HAPSITE, the target compounds
must be supplied to the instrument as a gaseous mixture of known volume/volume
composition (mole/mole % or ppmv levels in air or nitrogen) and at atmospheric
pressure.
There are a number of important factors to consider where attention to detail is
important in acquiring, preparing, and handling gaseous standard calibration
mixtures. These can be organized in three groups:
1
How to establish the desired concentrations of the required compounds. See
2
Correct delivery of the mix to the inlet of the HAPSITE. See
.
3
Gas cylinder safety, contamination checks and corrective
steps in the equipment. See
.