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Why Choose Fuel Cell Sensor Alcohol Tester? Breathalyzers with fuel cell sensors maintain accuracy over a much longer period of time and are more likely to produce the same test result in repeated, uninterrupted tests than semiconductor devices. Fuel cell-based testers also require significantly less-frequent recalibration than semiconductor sensors – up to 1,500 tests or once a year – and regular use of a fuel cell breathalyzer can actually help maintain the accuracy of the fuel cell, as moisture in exhaled human breath is beneficial to the sensor. Unlike semiconductor models, a fuel cell sensor will not produce a false positive for individuals who are diabetic or on a low calorie diet. Semiconductor devices can also react to cigarette smoke, breath acetone, and volatile chemicals such as hairspray and gasoline vapor, and give positive alcohol readings even when no alcohol is present.
