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Police No Longer Follow ATC Best Practices Respecting Tolerance
Purpose of this sample cross-examination: To demonstrate that when the particular instrument was first placed into service, the tolerance...
Stephen Biss
Mar 28, 20185 min read


Canada's NRC on Traceability
Defence lawyers need to convince the criminal justice system that "traceability" of all forensic measurements is a condition precedent to...
Stephen Biss
Mar 26, 20185 min read


Establishment of Calibration Intervals
The concept of "calibration interval" is an important one in measurement science. Unfortunately most criminal law lawyers and Judges are...
Stephen Biss
Mar 25, 20182 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


Internal Standards Also Need Calibration and Calibration Interval
Purpose: To explain the function of internal standards, the ITP, internal test procedure to the Court. To obtain an admission that the...
Stephen Biss
Mar 24, 20185 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


Traceability of Measurement Results is Through the Certificate of Calibration
"Traceability" is an important concept in metrology - measurement science. Defence lawyers need to study metrology, find experts, and...
Stephen Biss
Mar 2, 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...
Stephen Biss
Mar 1, 20186 min read


How to Calibrate - Teach an AI - Build the Inverse Logarithmic Calibration Curve
Purpose: To educate the Court about the Analytical Theory of the 8000C Optical Bench including Emitter, Sample Chamber, Dual Detectors,...
Stephen Biss
Feb 28, 20183 min read


Calibration Laboratory Requires Accreditation
Purposes: To obtain an admission that calibration or re-calibration needs to be done by an entity that is accredited by ASCLD/LAB ANLAB...
Stephen Biss
Feb 26, 20182 min read


AI Hardware and Software Can't Measure Without Learning and Re-Learning
Purpose: To educate the Court as to the "why" of the unreliability of an approved instrument to measure across the measuring interval if...
Stephen Biss
Feb 25, 20186 min read


What are the CGPM and BIPM? Is Canada a member?
Purposes: To connect evidentiary breath testing in Canada, the Criminal Code, and the Weights and Measures Act section 4(1) to the Metre...
Stephen Biss
Feb 20, 20184 min read


Applying Magna Carta and the Concept of the Measurement Standard - the Etalon
Purpose: To connect the concept of measurement standard, reference standard, étalon to Canadian law, Canadian constitutional law, and...
Stephen Biss
Feb 19, 20185 min read


What is Accuracy? Techniques to Enhance Accuracy
Purpose: To develop the concept that, in metrology, accuracy is not a number. It is something that we work towards. It does not make...
Stephen Biss
Feb 18, 20182 min read


Criminal Code Over 80 Sections that Contemplate "Quantitative Analysis"
Purpose: To ultimately suggest that searches of breath are unreasonable and violate section 8 of the Charter, if police are using, for ...
Stephen Biss
Feb 17, 20184 min read


Measurements Under the Criminal Code of Canada Use SI Units
Purpose: To connect the Criminal Code and its wording about concentration of alcohol in units of blood with the International system of...
Stephen Biss
Feb 16, 20184 min read


What is measurement?
Purpose: Cross-examination of a CFS scientist on the VIM. To connect "measurement" in Canadian evidentiary breath testing to...
Stephen Biss
Feb 15, 20186 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...
Stephen Biss
Feb 14, 20184 min read


Factors Influencing Reliability
What is "reliability" in the context of a "quantitative analysis"? What does "reliability" mean in measurement science? We have a...
Stephen Biss
Feb 13, 20183 min read


Stop, Document, and Report
Purpose: To educate the Court about good laboratory practice. To obtain an admission from the CFS scientist, that good laboratory...
Stephen Biss
Feb 12, 20185 min read
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