The Best Personal Breathalyzers

Accuracy and Sensor Type

The most critical factor in a personal breathalyzer is its accuracy. Look for devices that utilize semiconductor or electrochemical sensors. Electrochemical sensors are generally considered more accurate and less prone to interference from other substances compared to semiconductor sensors. Always check for certifications or standards the device meets, such as those from the NHTSA or FDA, though these are more common for professional-grade devices.

Ease of Use and Portability

A good personal breathalyzer should be intuitive to operate, even for first-time users. Features like a clear digital display, simple one-button operation, and quick warm-up times contribute to a user-friendly experience. Portability is also key; most personal devices are designed to be compact and lightweight, easily fitting into a pocket or purse for on-the-go checks.

Calibration and Maintenance

Breathalyzers require periodic calibration to maintain their accuracy. Check the manufacturer's recommendations for calibration frequency, which can range from every 6 to 12 months. Some devices offer self-calibration features, while others may need to be sent back to the manufacturer. Consider the availability and cost of replacement mouthpieces if included.

Additional Features

Beyond basic readings, some devices offer advanced features. These might include memory functions to store previous test results, different units of measurement (e.g., BAC, g/L), audible or visual alerts when a certain threshold is reached, and smartphone connectivity for tracking or sharing results. Evaluate which, if any, of these extras are important for your needs.