: Generally found in lower-cost, consumer-grade models. While more affordable, they are more prone to false positives and require more frequent calibration. These are best for casual, "rule of thumb" personal monitoring rather than precise clinical needs. 2. Check for Certifications
: 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 how to buy a breathalyzer
: In the United States, the Food and Drug Administration (FDA) reviews breathalyzers for safety and effectiveness. : Generally found in lower-cost, consumer-grade models
By prioritizing sensor quality and regulatory compliance, you can ensure that the breathalyzer you purchase serves as a dependable tool for safety rather than a source of false confidence. look for official regulatory approvals:
: 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
: Ensure the device uses hygienic, replaceable mouthpieces if you plan on testing multiple people. 5. Intended Use and Budget
To ensure a device is reliable, look for official regulatory approvals: