Section 69 Dry Gas Accuracy Tests and Calibration
| Library | DWI Experts and the Science of Chemical Tests 2014 |
The dry gas is (usually) an NIST (National Institute of Standards and Testing)-traceable cylinder under pressure, which when opened will deliver ethanol gas at a predetermined concentration.
Compressed ethanol gas has also been shown to be a reliable method of calibration and determination of accuracy on breath testing devices. L.D. Silverman et al., Confirmation of Ethanol Compressed Gas Standard Concentrations by an NIST-Traceable, Absolute Chemical Method and Comparison With Wet Breath Alcohol...
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