conditions precedent to 320.31(1)(a) | quantitativeanalysis 2/2

Sep 7, 20223 min read

Ambient Fail Threshold 5, 10, 19, 20 ?

We know that the ambient fail threshold (the mg% point at which the exception error is flagged) on both the Intoxilyzer 5000/5000C and...

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Reliability: 64 in 2011 Ambient Threshold Changes, Elevated Zero, Purge Fail

Stephen Biss

Sep 4, 20223 min read

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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Reliability: Cal Checks in the Context of Earlier & Later Ambient Fails

Stephen Biss

Sep 2, 20222 min read

Reliability: Cal Checks in the Context of Earlier & Later Ambient Fails

Tip 47: A calibration check using a wet-bath simulator containing alcohol standard is not reliable if information is missing about air...

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Ambient Conditions Change Baseline 0 on an IR Breath instrument - Disappearing Alcohol

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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Reliability: Disabling Ambient Fail Exception, Making Alcohol Disappear

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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Reliability: Air Blanks "System Blank Test"

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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Continuity: Outgoing = Incoming Seal Numbers

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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Is it safe to assume that the target value of the alcohol standard was 100?

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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Cross-examination of solution change QT using COBRA

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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Cross-examination of Solution Change QT on Standard Operating Procedures (SOPs)

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

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

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...

16 views0 comments

Simulator is necessary "Accessory Equipment" that requires inspection and re-calibration

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...

14 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

Use of Wet-bath Simulator in Winter Cold Temperatures

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

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