Blog | Resources: Challenging Unreliable Quantitative Analysis Forensic Science

WHAT DO YOU DO WITH THE DUI DISCLOSURE ONCE YOU’VE GOT IT?

Sep 14, 20234 min read

WHAT DO YOU DO WITH THE DUI DISCLOSURE ONCE YOU’VE GOT IT?

Criminal Lawyers Association: FOR THE DEFENCE • VOL. 43 • NO. 4 39 , August-September 2023, at p. 34. WHAT DO YOU DO WITH THE DUI...

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Stephen Biss

Jan 13, 20234 min read

Reliability: Flooded Sample Chamber 2

My 66 series 5000 with the flooded sample chamber is still drying out. Initially I would receive a "Processor Error" flag on startup...

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Stephen Biss

Jan 4, 20233 min read

Reliability: Flooded Sample Chamber 1

It is very easy for a qualified technician to accidentally flood the sample chamber on an Intoxilyzer 5000 (or 5000C) or an 8000 (or...

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Stephen Biss

Dec 28, 20222 min read

Reliability: Aging - Losing Memory

The Intoxilyzer® 8000 depicted in this video was once a reliable evidentiary breath testing instrument in the United States. It is...

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Continuity of Alcohol Standard Solution: Keep from Freezing

Stephen Biss

Dec 21, 20226 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...

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What is SCC: R. v. St-Onge Lamoureux "Reliability" in an Approved Intrument?

Stephen Biss

Dec 14, 20221 min read

What is SCC: R. v. St-Onge Lamoureux "Reliability" in an Approved Intrument?

Please carefully re-read what the Supreme Court of Canada said about "reliability" in R. v. St-Onge Lamoureux. Please think about and...

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What is Differential Voltage Monitoring (DVM) ?

Stephen Biss

Dec 8, 20226 min read

What is Differential Voltage Monitoring (DVM) ?

Many years ago Ontario defence lawyers cross-examined breath techs on "how much room there was" on the particular Intoxilyzer 5000C to...

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Stephen Biss

Nov 30, 20228 min read

Reliability: Ambient Conditions

Tip 41: Changing breath room ambient conditions can reduce "system calibration check" and "system blank test" reliability. Any...

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Stephen Biss

Nov 23, 20224 min read

Ancient Egypt and DUI Metrology

If you served wine or beer at a pub in ancient Egypt the beverages were measured out using liquid volume instruments like these. Each...

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Study the Block Diagram in the Wet-Bath Simulator Manufacturer's Manual

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...

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Stephen Biss

Nov 16, 20223 min read

Light at the End of the DUI Tunnel

You need to know that there is light at the end of the DUI litigation tunnel, but you need to establish a mindset that gets you to the...

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Calibration Check on Periodic Inspection of Wet-bath Simulator

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...

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Continuity of Alcohol Standard: CalGuard Feature

Stephen Biss

Nov 3, 20223 min read

Continuity of Alcohol Standard: CalGuard Feature

Tip 40: Some police services take the position that they don't need to use seals between the simulator housing and the jar. Failure to...

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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...

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Error in Facts - "Impaired Driving and Other Criminal Code Driving Offences", Jokinen and Keen

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...

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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)...

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Change of Response at One Point but Not at Another Point that is Equivalent

Stephen Biss

Oct 12, 20224 min read

Change of Response at One Point but Not at Another Point that is Equivalent

Purpose: To suggest that there is empirical evidence in the matter before the Court of change in response by the approved instrument at...

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Certificate of Calibration of a NIST mercury thermometer

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....

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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...

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Continuity: Whiteboard or blackboard method

Stephen Biss

Sep 30, 20221 min read

Continuity: Whiteboard or blackboard method

Tip 36: Some police detachments have been known to write the manufacturer name, lot number, name/badge of solution change officer,...

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