How often must breathalyzers be calibrated for accuracy?

Breathalyzers must be calibrated every 30 to 60 days, depending on their usage, to ensure they remain accurate and reliable. This regular calibration is crucial because factors such as heavy usage, exposure to extreme temperatures, and the aging of electronic components can affect the device's accuracy over time. Proper calibration helps to ensure that any assumptions made during a DWI investigation are based on precise data, significantly impacting the outcomes of legal proceedings.

The frequency of calibration takes into account the operational demands placed on the device, as more frequent usage can lead to quicker wear and potential inaccuracies. Thus, establishing a routine calibration schedule helps maintain the integrity of the breath test results and supports the enforcement of DWI laws effectively.