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We know that the ambient fail threshold (the mg% point at which the exception error is flagged) on both the Intoxilyzer 5000/5000C and...

This is the same Intoxilyzer® 64 with upgraded keyboard and (software) serial number depicted in the blog "Ambient Conditions Change...

Tip 47: A calibration check using a wet-bath simulator containing alcohol standard is not reliable if information is missing about air...

Experiment studying the phenomenon of disappearing alcohol It is easy to replicate this experiment on an Intoxilyzer® 5000. It is more...

Tip 45: Study the breath room video and learn everything you can about the breath room and detachment. Watch for: Has the qualified...

Tip 43: A properly functioning approved instrument air blank system (including the instrument itself, the ambient environment around the...

Tip 39: The key to usefulness of alphanumeric seals on a #duisimulator is whether or not the incoming seal number on the subsequent...

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

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...

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

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

A wet-bath simulator is "accessory equipment" according to the ATC Best Practices document. A wet-bath simulator requires annual...

Purpose: To further challenge the Crown's suggestion that the anomalous low cal. checks that occurred in this breath truck were not...

Purpose: To cross-examine a CFS scientist on use of Guth 2100 wet-bath simulator under Canadian cold operating conditions To build a case...