City of Bremerton v. Osborne

Defendant was charged and convicted of the offense of driving while under the influence of or affected by the use of intoxicating liquor. He appeals, contending evidence of the result of a breathalyzer test was improperly admitted.

In State v. Baker, 56 Wn.2d 846, 355 P.2d 806 (1960), we outlined the four requirements which must be shown by the prosecution before the results of a breathalyzer test may be admitted in evidence. The requirements were stated to be (p. 852):(1) That the machine was properly checked and in proper working order at the time of conducting the test; (2) that the…