Intoximeters recommends that external accuracy checks and calibrations be performed using either a dry gas or wet bath standard approved for use by both NHTSA and Intoximeters. (Wet bath simulators would be used with properly certified and maintained ethanol solutions).
In all cases the compressed gas tanks, simulators and simulator solutions should be used and maintained only in accordance with the quality assurance plans provided by their respective manufacturers to insure that they produce consistent and reliable samples.
Approved Wet Bath Simulator (Standard)
An Alcohol Breath Simulator (used in conjunction with a known Simulator Solution Standard) is a thermostatically controlled, w