SCIENCE: SFPD Breathalyzer Error Puts Hundreds Of DUI Convictions In Doubt. “For at least six years, the police officers in charge of testing the 20 breathalizyers used by the Police Department did not carry out any tests on the equipment. Officers instead filled the test forms with numbers that matched the control sample, said Public Defender Jeff Adachi, throwing countless DUI convictions into doubt.” They should face jail time for that fraud.