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 20, 2018
- 4 min
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...
11 views0 comments
Stephen Biss
- Apr 5, 2018
- 2 min
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...
9 views0 comments
Stephen Biss
- Mar 25, 2018
- 6 min
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...
13 views0 comments
Stephen Biss
- Mar 23, 2018
- 3 min
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
- Feb 14, 2018
- 4 min
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...
16 views0 comments
Stephen Biss
- Jan 25, 2018
- 1 min
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...
1 view0 comments
Stephen Biss
- Jan 13, 2018
- 7 min
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...
6 views0 comments
Stephen Biss
- Jan 10, 2018
- 10 min
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...
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Stephen Biss
- Jan 10, 2018
- 2 min
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...
7 views0 comments
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