An important and detailed article by the New York Times on the breathalyzer machines and the very real problems that they have.
The point of the article is that the breathalyzer machines have real problems with reliability. Mostly attorneys know that the breathalyzer machines have problems but the issue is how to challenge the results in court. Such challenges are important and they should appear more frequently on appeal.
Link:https://www.nytimes.com/2019/11/03/business/drunk-driving-breathalyzer.html?action=click&module=Top%20Stories&pgtype=Homepage