Infrared quantitative evidential breath-alcohol analyzers: in vitro accuracy and precision studies.

The in vitro accuracy and precision of four infrared breath-alcohol analyzers, the Alcotest 7010, BAC Verifier, Intoxilyzer 5000, and Intoximeter 3000, were studied with a protocol adapted from portions of the U.S. Department of Transportation's (DOT) "Standard for Devices to Measure Breath Alcohol." Statistical evaluation of these studies indicated that all instruments met or exceeded the performance requirements modified from the U.S. DOT Standard for quantitative evidential breath-alcohol analyzers.