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Maybe the Instrument Is No Longer Linear Enough to Be An "8000C"
Purpose: To explore the analytical variability of the 8000C as determined by the Alcohol Test Committee during evaluation of the 8000C...
Stephen Biss
May 22, 20185 min read


Start By Defining "Reliability" don't focus on "Accuracy"
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...
Stephen Biss
Apr 6, 20186 min read


3 Consecutive Annual Inspections Reveal a Trend Towards Unreliability
Let's suppose that you obtain, as the result of disclosure or a Freedom of Information application of paper or electronic documents,...
Stephen Biss
Apr 4, 20185 min read


Why Does the ATC Say Single Point Control Tests are Good Enough?
Purpose: To explore the differences between a measurement instrument that has a linear relationship between the thing measured and the...
Stephen Biss
Mar 25, 20186 min read


Response Drifts Over Time
In an article relied upon by the SCC in St. Onge, Brian Hodgson stated: Defence lawyers need to educate themselves about the meanings of...
Stephen Biss
Mar 23, 20183 min read
Periodic Inspection Must Be Done Under Stable Lab Conditions
Purpose: To challenge the CFS expert's position that inconvenient data should be excluded for the purpose of calculating precision. To...
Stephen Biss
Feb 1, 20181 min read


Error Rates and Drift in Precision
Purpose: To establish that the ATC/CFS is not sampling from aging instruments out in the field to determine error rates To establish that...
Stephen Biss
Jan 14, 20187 min read
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