: The Department of Transportation and the National Highway Traffic Safety Administration maintain a Conforming Products List (CPL) for alcohol screening devices. A device on this list has met rigorous evidentiary standards. 3. Consider Calibration and Maintenance
: Ensure the device uses hygienic, replaceable mouthpieces if you plan on testing multiple people. 5. Intended Use and Budget how to buy a breathalyzer
To ensure a device is reliable, look for official regulatory approvals: : The Department of Transportation and the National
