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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...
Stephen Biss
Apr 27, 20184 min read
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Relevance of Contemporaneous Documentation by Inspector Taking Instrument Out of Service
Let's suppose that as a result of a disclosure request or Freedom of Information application you find an electronic or paper document...
Stephen Biss
Apr 20, 20184 min read
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ABA Sequences v ACA Sequences
Purpose: To explain to the Court, the differences between ABA (Esc Esc B) and ACA (Esc Esc C) sequences To confirm that ABA sequences are...
Stephen Biss
Apr 5, 20182 min read
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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
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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
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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...
Stephen Biss
Feb 14, 20184 min read
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Police don't follow their Standard Operating Procedures
Purpose: To establish non-compliance with the Standard Operating Procedure respecting entering accurate data into the tombstone data...
Stephen Biss
Jan 25, 20181 min read
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Control Tests do not displace Formal Calibration Intervals
Purpose: To separate conceptually control tests from calibration To obtain an admission that there are no "assessors" in the province of...
Stephen Biss
Jan 13, 20187 min read
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Beer-Lambert Law as Stated in Training Aid is Over-Simplified and Inadequate
This blog entry contains excerpts from the cross-examination of a CFS scientist during an over 80 trial. It was suggested to the...
Stephen Biss
Jan 10, 201811 min read
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The "known" is the original calibration of the instrument
Purpose: To separate the concepts of "calibration" from "control checks" To clarify that "calibration" is something that happens at the...
Stephen Biss
Jan 10, 20182 min read
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