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The Intoxilyzer® 8000 depicted in this video was once a reliable evidentiary breath testing instrument in the United States. It is...

Please carefully re-read what the Supreme Court of Canada said about "reliability" in R. v. St-Onge Lamoureux. Please think about and...

Many years ago Ontario defence lawyers cross-examined breath techs on "how much room there was" on the particular Intoxilyzer 5000C to...

If you served wine or beer at a pub in ancient Egypt the beverages were measured out using liquid volume instruments like these. Each...

Does partial automation of error-checking in an approved instrument: specifically diagnostics tests, air blanks, cal. checks, and maximum...

What is a Purge Fail on an Intoxilyzer 8000C ? What is a Purge File on an Intoxilyzer 5000C ? How does this phenomenon affect reliability...

What does "ambient fail" or "ambient failed" mean on an Intoxilyzer 8000C? Watch the following video and ask yourself why the ambient...

What does an air blank look like on an Intoxilyzer 8000 or 8000C? What is a blank test? What is a system blank test? What does 000 mean...

In his decision May 13, 2015, Justice Paciocco stated: 95 I will begin with the simulator evidence, for if the simulator was not...

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

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...

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

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...

Although not stated in the 8000C Training Aid, CFS scientists seem to be in agreement, that it is recommended that a NIST mercury...

When qualifying an expert witness, Courts need to carefully consider the scope of expertise of the expert. Sometimes it is convenient for...

What is the purpose in Stinchcombe/McNeil disclosure or O'Connor production of maintenance records and historical data? Government...