The ACE AF-33 alcohol tester impresses with its high measurement accuracy and its modern, timeless design. It features a smooth yet easy-to-grip surface. This alcohol tester also includes integrated lighting for the mouthpiece. Tested by TU Vienna, the measurement accuracy, according to the alcohol tester accuracy study conducted by the Technical University of Vienna in October 2015, was evaluated at five reference points (0.00, 0.10, 0.25, 0.40, and 0.60 per mille) using five identical measuring devices, each tested ten times in the laboratory. In total, this device type was tested 250 times in the laboratory of the Institute of Analytical Chemistry at the Technical University of Vienna.