People v. Gower

The issue tendered by the defendants and the People in these cases is the admissibility of certain certificates offered by the prosecution to show, by way of foundation for the introduction of the results of breathalyzer tests, that the particular breathalyzer equipment utilized was in proper working order and that the ampoules used contained properly compounded chemicals.

There were certificates, addressed "To whom it may concern”, signed by the director of the State Police scientific laboratory in Albany, certifying as to the results of analyses of ampoules made on specified dates;,…