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Stephen Biss
May 22, 20185 min read
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...
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Stephen Biss
Apr 27, 20184 min read
BAC Analysis in a Lab Without Bracketing Controls is at Best Qualitative not Quantitative
We have a serious problems in the Canadian criminal justice system. One of them is the failure of Parliament and the Courts to recognize...
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Stephen Biss
Apr 13, 20185 min read
Change at One Point but Not at Another Point that is Equivalent
This is a sample excerpt from a cross-examination of a Crown expert using data from periodic inspection of an approved instrument. The...
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Stephen Biss
Mar 25, 20186 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...
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Stephen Biss
Mar 23, 20183 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...
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Stephen Biss
Mar 1, 20186 min read
8000C Auto-Calibration Sequence - How to Run the Auto-Calibration Sequence
Purpose of this cross-examination: To educate the Court about the calibration sequence run on the approved instrument at the factory. To...
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Stephen Biss
Feb 14, 20184 min read
Traceability of Measurement Result on an Approved Instrument
Purpose: To obtain an admission from the CFS scientist that the traceability of a measurement result on an approved instrument or a truck...
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Stephen Biss
Jan 11, 201810 min read
Instrumental Deviations from Beer-Lambert Law
This blog entry explores the use of a university textbook during cross-examination of a CFS scientist on "Instrumental Deviations from...
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