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Stephen Biss
Dec 21, 20227 min read
Continuity of Alcohol Standard Solution: Keep from Freezing
Many years ago I asked for timely disclosure/production of a representative bottle of the alcohol standard lot used during the breath...
62 views0 comments


Stephen Biss
Nov 17, 20223 min read
Study the Block Diagram in the Wet-Bath Simulator Manufacturer's Manual
Tip 25: Obtain a copy of the Guth Laboratories, Inc. wet-bath "Model 2100 Simulator Operation Manual" and study the "Model 2100-Block...
14 views0 comments


Stephen Biss
Nov 10, 20222 min read
Calibration Check on Periodic Inspection of Wet-bath Simulator
Tip 27: Does the Inspector use a traceable reference thermometer, that is accurate and precise, to at least two decimal places, to...
14 views0 comments


Stephen Biss
Oct 26, 20222 min read
Continuity: Write on Empty Bottle
Tip 35: The simplest method of communicating the last change date of the alcohol standard solution placed into the wet-bath simulator is...
8 views0 comments


Stephen Biss
Oct 19, 20227 min read
Error in Facts - "Impaired Driving and Other Criminal Code Driving Offences", Jokinen and Keen
Does partial automation of error-checking in an approved instrument: specifically diagnostics tests, air blanks, cal. checks, and maximum...
27 views0 comments


Stephen Biss
Oct 15, 20224 min read
Continuity: From the Box
Tip 37: Defence lawyers need to study the video - does the qualified technician take a random (unrelated to the matter before the Court)...
13 views0 comments


Stephen Biss
Oct 3, 20222 min read
Continuity: Use of a Seal
Tip 38: One of the best ways to control wet-bath simulator alcohol standard continuity is to use alphanumeric police seals and record...
12 views0 comments


Stephen Biss
Sep 16, 20222 min read
Appendix E: Location & Anecdotal Notes in Log
Tip 30: The CFS 8000C Training Aid of 2013 at page 191 of 238, Appendix "E" recommends that the Alcohol Standard Log, updated by the...
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Stephen Biss
May 20, 20228 min read
Cross-examination of solution change QT using COBRA
There are three conditions precedent to the Crown's use of the "conclusive proof" presumption in secton 320.31(1) of the Criminal Code of...
18 views0 comments


Stephen Biss
May 15, 20225 min read
Cross-examination of Solution Change QT on Standard Operating Procedures (SOPs)
The cross-examination example below, is of a very, very, experienced and respected qualified technician. Notwithstanding his training and...
34 views0 comments


Stephen Biss
Feb 14, 20203 min read
Simulator is necessary "Accessory Equipment" that requires inspection and re-calibration
A wet-bath simulator is "accessory equipment" according to the ATC Best Practices document. A wet-bath simulator requires annual...
15 views0 comments


Stephen Biss
Feb 12, 20185 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...
6 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
Jan 24, 20184 min read
Checking Analytical Variability and Accuracy of the Instrument? Where?
Purpose: To explore the lack of a lab setting when accuracy and precision of the instrument are checked on periodic or annual inspection....
23 views0 comments


Stephen Biss
Jan 15, 20186 min read
No Supervision by ATC, CFS, or Anyone of Annual/Periodic Inspection SOPs
Purpose: To show that the ATC recommendations for operational procedures at time of use do not account for the need during inspections to...
18 views0 comments
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