SOP | quantitativeanalysis

Continuity of Alcohol Standard Solution: Keep from Freezing

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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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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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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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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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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Appendix E: Location & Anecdotal Notes in Log

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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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...

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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...

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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...

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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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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...

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Checking Analytical Variability and Accuracy of the Instrument? Where?

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....

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No Supervision by ATC, CFS, or Anyone of Annual/Periodic Inspection SOPs

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...

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