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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...
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Stephen Biss
May 16, 20188 min read
Annual Inspections Done Without Reference to Manufacturer's Specifications
This is a sample cross-examination of an Ontario CFS scientist on the procedure used to perform an initial factory calibration (or a...
14 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
Feb 9, 20187 min read
Heater Response Time on Guth 2100
Purpose: To further challenge the Crown's suggestion that the anomalous low cal. checks that occurred in this breath truck were not...
6 views0 comments


Stephen Biss
Feb 7, 20184 min read
Use of Wet-bath Simulator in Winter Cold Temperatures
Purpose: To cross-examine a CFS scientist on use of Guth 2100 wet-bath simulator under Canadian cold operating conditions To build a case...
9 views0 comments


Stephen Biss
Feb 6, 20184 min read
Wet-bath Simulators Manufacturer Specs
Purpose: To obtain an admission from a CFS scientist that expectation of ATC Best Practices Recommendation is for annual inspection of...
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Stephen Biss
Jan 23, 20182 min read
Being Intolerant Depends on Humans not the Machine
Purpose: To challenge the Crown's assertion that the AI will automatically shut down if anything is out of tolerance or ATC or...
1 view0 comments


Stephen Biss
Jan 22, 20186 min read
Distorted Concept of "Accuracy", "Precision", and "Reliability"
Purpose: To remind the Court of the concept of "reliability" used by the SCC in St-Onge. To educate the Court as to the definitions of...
6 views0 comments
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