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This is a sample cross-examination of an Ontario CFS scientist on the procedure used to perform an initial factory calibration (or a...

This is a sample excerpt from a cross-examination of a Crown expert using data from periodic inspection of an approved instrument. The...

Purpose: To remind the Court, "thing 1" in 258(1)(c) is unconstitutional under Charter 11(d) (R v St-Onge) but is saved by section 1. To...

Let's suppose that you obtain, as the result of disclosure or a Freedom of Information application of paper or electronic documents,...

In an article relied upon by the SCC in St. Onge, Brian Hodgson stated: Defence lawyers need to educate themselves about the meanings of...

Purpose: To educate the Court about the Analytical Theory of the 8000C Optical Bench including Emitter, Sample Chamber, Dual Detectors,...

Purpose: To develop the concept that, in metrology, accuracy is not a number. It is something that we work towards. It does not make...

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

Purpose: To challenge the CFS expert's position that inconvenient data should be excluded for the purpose of calculating precision. To...

Purpose: To obtain admissions about the use of historical control test data by the Centre of Forensic Sciences in Toronto to calculate...

Purpose: To explore the lack of a lab setting when accuracy and precision of the instrument are checked on periodic or annual inspection....

Purpose: To remind the Court of the concept of "reliability" used by the SCC in St-Onge. To educate the Court as to the definitions of...