Buy A Breathalyzer — How To

To ensure a device is reliable, look for official regulatory approvals:

: Ensure the device uses hygienic, replaceable mouthpieces if you plan on testing multiple people. 5. Intended Use and Budget how to buy a breathalyzer

: Options range from keychain-sized devices to smartphone-connected units and professional handhelds. To ensure a device is reliable, look for

: 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 : The Department of Transportation and the National

: Most fuel cell models require calibration every 6–12 months or after a certain number of tests (e.g., 500-1,000). 4. Evaluate Portability and Features

: Over time, sensors drift. Check if the manufacturer offers a mail-in calibration service or if the device has replaceable sensor modules.