top of page

lawyers.ca duimetrology.com
905-273-3322 or 1-877-273-3322
Search


Stephen Biss
Oct 6, 20221 min read
Certificate of Calibration of a NIST mercury thermometer
Tip 14: Whenever police purchase a new NIST mercury thermometer, the Canadian distributor provides them with a "Guth Laboratories, Inc....
16 views0 comments


Stephen Biss
Apr 9, 20223 min read
Reliability - Calibration is a Curve
Tip 50: When an "approved instrument" is calibrated at the factory, the manufacturer doesn't simply adjust the electronics in the...
15 views0 comments


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...
27 views0 comments


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...
12 views0 comments


Stephen Biss
Apr 20, 20184 min read
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...
12 views0 comments


Stephen Biss
Mar 29, 20186 min read
Police Fail to Correct a Linearity Problem on In-House Annual Inspection
Let's suppose that you obtain disclosure or Freedom of Information documents respecting In-house Periodic Inspections by your local...
21 views0 comments


Stephen Biss
Mar 28, 20185 min read
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...
7 views0 comments


Stephen Biss
Mar 25, 20182 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...
6 views0 comments


Stephen Biss
Mar 24, 20185 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...
7 views0 comments


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...
11 views0 comments


Stephen Biss
Mar 2, 20186 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...
17 views0 comments


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...
19 views0 comments


Stephen Biss
Feb 28, 20183 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,...
22 views0 comments


Stephen Biss
Feb 26, 20182 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...
5 views0 comments


Stephen Biss
Feb 25, 20186 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...
0 views0 comments


Stephen Biss
Feb 15, 20186 min read
What is measurement?
Purpose: Cross-examination of a CFS scientist on the VIM. To connect "measurement" in Canadian evidentiary breath testing to...
6 views0 comments


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...
18 views0 comments
Stephen Biss
Jan 21, 20181 min read
Attempt to Distinguish from Jackson and Vallentgoed
Purpose: To support argument that the Maintenance History shows that the instrument was taken "out of service", for "consistently low...
8 views0 comments


Stephen Biss
Jan 18, 201810 min read
Durability Over Time
Purpose: To obtain admissions respecting the inadequacy of ATC / CFS recommendations in requiring "stability of metrological...
4 views0 comments


Stephen Biss
Jan 13, 20187 min read
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...
30 views0 comments
bottom of page