Reliability: 64 in 2011 Ambient Threshold Changes, Elevated Zero, Purge Fail
This is the same Intoxilyzer® 64 with upgraded keyboard and (software) serial number depicted in the blog "Ambient Conditions Change...
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Stephen Biss
Sep 2, 20222 min read
Ambient Conditions Change Baseline 0 on an IR Breath instrument - Disappearing Alcohol
Experiment studying the phenomenon of disappearing alcohol It is easy to replicate this experiment on an Intoxilyzer® 5000. It is more...
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Stephen Biss
Sep 1, 20223 min read
Approved Instruments Order
Excerpt from Canada Regulations Approved Breath Analysis Instruments Order SI/85-201CRIMINAL CODE Registration 1985-11-27 Order Approving...
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Stephen Biss
Aug 31, 20222 min read
Reliability: Disabling Ambient Fail Exception, Making Alcohol Disappear
Tip 45: Study the breath room video and learn everything you can about the breath room and detachment. Watch for: Has the qualified...
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Stephen Biss
Aug 28, 20225 min read
Reliability: Air Blanks "System Blank Test"
Tip 43: A properly functioning approved instrument air blank system (including the instrument itself, the ambient environment around the...
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Stephen Biss
Jul 15, 20222 min read
Continuity: Outgoing = Incoming Seal Numbers
Tip 39: The key to usefulness of alphanumeric seals on a #duisimulator is whether or not the incoming seal number on the subsequent...
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Stephen Biss
Jun 17, 20224 min read
COBRA V and Hospital Change of Location
Warning: This blog entry was written prior to Bill C-46 during an era when forensic science in Ontario was more transparent. Prior to R....
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Stephen Biss
Jun 10, 20223 min read
Is it safe to assume that the target value of the alcohol standard was 100?
The video below displays a variety of alcohol standards that could be used in a #duisimulator for evidentiary breath testing for...
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Stephen Biss
May 28, 20224 min read
Continuity of the Alcohol Standard
Tip 34: The use of an alcohol standard during evidentiary breath testing in Canada was not mentioned in the Criminal Code as a condition...
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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...
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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...
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Stephen Biss
Apr 30, 20223 min read
Know the Simulator Probes
Tip 24: Knowledge of #duisimulator probes assists understanding of function & malfunction of thermistor, heater, and thermometer(s). Many...
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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
Dec 3, 20212 min read
Verification of Digital Thermometer
Although not stated in the 8000C Training Aid, CFS scientists seem to be in agreement, that it is recommended that a NIST mercury...
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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...
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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...
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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...
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Stephen Biss
Jan 17, 20185 min read
Each Test Stands on Its Own
Sample cross-examination on the ATC and CFS Position Paper policy that every test stands on its own - that "reliability" has nothing to...
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Stephen Biss
Jan 15, 201813 min read
Is an Approved Instrument Really a Screening Device?
Purpose: To suggest that an AI is a quantitative analysis instrument and an ASD is a qualitative analysis instrument and suggest that the...
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Stephen Biss
Jan 13, 201817 min read
R. v. Vallentgoed Distinguished on facts - Short Calibration Interval
Purpose: To obtain admissions from the Crown expert to enable argument that Vallentgoed can be distinguished on its facts - particularly...
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