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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Stephen Biss
- Nov 30, 2022
- 8 min
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
- Sep 2, 2022
- 2 min
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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Stephen Biss
- Aug 31, 2022
- 2 min
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...
9 views0 comments
Stephen Biss
- Aug 28, 2022
- 5 min
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
- Aug 18, 2022
- 2 min
Ambient Interferents Compromise Reliability of Control Tests
Tip 48: The reliability of control tests using the alcohol standard in a wet-bath #duisimulator may be compromised by the presence in the...
15 views0 comments
Stephen Biss
- Apr 9, 2022
- 3 min
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
- Apr 13, 2018
- 5 min
Change at One Point but Not at Another Point that is Equivalent
This is a sample excerpt from a cross-examination of a Crown expert using data from periodic inspection of an approved instrument. The...
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Stephen Biss
- Apr 6, 2018
- 6 min
Start By Defining "Reliability" don't focus on "Accuracy"
Purpose: To remind the Court, "thing 1" in 258(1)(c) is unconstitutional under Charter 11(d) (R v St-Onge) but is saved by section 1. To...
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Stephen Biss
- Apr 4, 2018
- 5 min
3 Consecutive Annual Inspections Reveal a Trend Towards Unreliability
Let's suppose that you obtain, as the result of disclosure or a Freedom of Information application of paper or electronic documents,...
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Stephen Biss
- Mar 1, 2018
- 6 min
8000C Auto-Calibration Sequence - How to Run the Auto-Calibration Sequence
Purpose of this cross-examination: To educate the Court about the calibration sequence run on the approved instrument at the factory. To...
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Stephen Biss
- Feb 28, 2018
- 3 min
How to Calibrate - Teach an AI - Build the Inverse Logarithmic Calibration Curve
Purpose: To educate the Court about the Analytical Theory of the 8000C Optical Bench including Emitter, Sample Chamber, Dual Detectors,...
12 views0 comments
Stephen Biss
- Feb 13, 2018
- 3 min
Factors Influencing Reliability
What is "reliability" in the context of a "quantitative analysis"? What does "reliability" mean in measurement science? We have a...
23 views0 comments
Stephen Biss
- Feb 10, 2018
- 7 min
Causation of Error v. Calculation of Drift in Precision - Evidence Based Assessment of Reliability
What is the purpose in Stinchcombe/McNeil disclosure or O'Connor production of maintenance records and historical data? Crown CFS...
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Stephen Biss
- Jan 22, 2018
- 6 min
Distorted Concept of "Accuracy", "Precision", and "Reliability"
Purpose: To remind the Court of the concept of "reliability" used by the SCC in St-Onge. To educate the Court as to the definitions of...
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Stephen Biss
- Jan 19, 2018
- 5 min
No Sampling of Aging Instruments in the Field
Purpose: To suggest that ATC/CFS scientists cannot provide any scientific opinion of the reliability of aging instruments out in the...
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Stephen Biss
- Jan 18, 2018
- 10 min
Durability Over Time
Purpose: To obtain admissions respecting the inadequacy of ATC / CFS recommendations in requiring "stability of metrological...
2 views0 comments
Stephen Biss
- Jan 15, 2018
- 6 min
Manipulating Control Test Data to Enhance Precision
Purpose: To neutralize the government scientist's assertion that anomalous data should be excluded from calculation of precision. To...
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Stephen Biss
- Jan 12, 2018
- 4 min
Short Calibration Interval and Reliability
Why is disclosure of information about the "calibration" of the approved instrument essential to any assessment of the reliability of a...
6 views0 comments
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