How often should you have your Breathalyzer calibrated?

It is recommended that you have a breath alcohol detector verified for accuracy every 1-12 months, depending on frequency of use. If you are using the breath alcohol detector multiple times daily, it is suggested to have the device calibrated at least monthly. If you do not use the breath alcohol detector daily but still use it several times a month, then it is suggested to have it verified at least every 6 months. If you use the alcohol detection only on rare occasions, then you should have it calibrated at least yearly. Calibration helps ensure that your device is operating correctly, and is an inexpensive way to greatly increase the useful life of your breath alcohol detector.