People v. Black

A conviction for driving while under the influence of intoxicating liquor in violation of section 11 — -501 (a) of the Illinois Vehicle Code (Ill. Rev. Stat. 1975, ch. 95/2, par. 11 — 501(a)) followed a jury trial at which the results of a breathalyzer test were admitted into evidence. The defendant primarily challenges the admissibility of that evidence on the ground that necessary elements of the foundation — that the device had recently been tested and found accurate and that the ampules inserted into the machine had been approved by the department of public health — were not properly…