Section 65 Simulators, Simulator Solutions, and Standard Gases

• Library: DWI Experts and the Science of Chemical Tests 2014

“Calibration” is tuning of the machine mechanisms so the reading of the machine recognizes certain interferents and the standard ethanol solution or dry gas standard at known alcohol concentration.

What is done in Missouri within 35 days is not calibrating but performing “accuracy checks” or “calibration checks,” making sure the machine is making readings within +/- 0.005 with the actual concentration of the ethanol in the simulator solution or dry gas. If the accuracy of the machine is unsatisfactory, the machine is then recalibrated. The best procedure and one...