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In Canada, wet-bath alcohol standard, used in recirculating mode, may only be used a maximum of 50 uses. The best evidence, and perhaps...

Tip 21: A CFS scientist has acknowledged police sometimes are tempted to record 34.0. Evidence of a CFS scientist, Dr. L, April 10, 2013,...

Warning: This blog entry was written prior to Bill C-46 during an era when forensic science in Ontario was more transparent. Prior to R....

The video below displays a variety of alcohol standards that could be used in a #duisimulator for evidentiary breath testing for...

Tip 20: Peel Regional Police Service has a #duisimulator DR5790 associated with Intoxilyzer 80-004789 that perfectly maintained its...

Tip 19: One of the best ways to tell whether or not QTs in your jurisdiction are taking Quality Assurance (QA) and Quality Control (QC)...

Tip 2: Find out the wet-bath #DUISimulator quantity at the detachment, their model numbers, calibration / service histories, and use with...

Tip 34: The use of an alcohol standard during evidentiary breath testing in Canada was not mentioned in the Criminal Code as a condition...

I agree that single point control tests and the Internal Test Procedure (ITP) check are good practice for police. The instrument shutting...

My experience is that disclosure has become shakier and shakier during the pandemic. Police and Crowns offices are not doing well in...

There are three conditions precedent to the Crown's use of the "conclusive proof" presumption in secton 320.31(1) of the Criminal Code of...

The cross-examination example below, is of a very, very, experienced and respected qualified technician. Notwithstanding his training and...

Two reasons why the data, close in time to the subject test date, included in Intoxilyzer COBRA downloads, is useful to the defence in...

There are serious problems in forensic science in both Canada and the United States. We need a full public review of forensic science in...

Tip 31: Location is everything when it comes to a #duisimulator in Ontario. The CFS Training Aid recommends that the alcohol standard be...

Tip 24: Knowledge of #duisimulator probes assists understanding of function & malfunction of thermistor, heater, and thermometer(s). Many...

Most of the rules of evidence that apply to adults, also apply to proceedings in Youth Courts in Canada. Police officers can give...

With respect to error rates in evidentiary breath testing, please see the blog entry "Error Rates and Drift in Precision". In September...

Tip 28: Make inquiries about chips or cracks in the simulator jar. Use a FOI application, Stinchcombe, O'Connor, or cross-examine to make...

Tip 50: When an "approved instrument" is calibrated at the factory, the manufacturer doesn't simply adjust the electronics in the...