The officer did not turn his mind as to whether the test should have been delayed due to the presence of residual mouth alcohol. (bestimpaireddefence.ca)
Cases are often won based on problems such as residual mouth alcohol, error codes, or a rising blood alcohol level defence. (mcgarrylaw.ca)
• The police make an arrest based on an improperly administered roadside breath machine (e.g., where residual mouth alcohol is present due to recent consumption). (mcgarrylaw.ca)