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Stephen Biss
Jan 26, 20182 min read
Downloaded Data is a Key Source of Information to Find Out Reason for Re-calibration
The approved instrument referred to, in the case below, was sent out for a recalibration, a few days after the client's subject tests. We...
4 views0 comments
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....
23 views0 comments
Stephen Biss
Jan 23, 20182 min read
Being Intolerant Depends on Humans not the Machine
Purpose: To challenge the Crown's assertion that the AI will automatically shut down if anything is out of tolerance or ATC or...
1 view0 comments
Stephen Biss
Jan 22, 20186 min read
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...
6 views0 comments
Stephen Biss
Jan 21, 20181 min read
Attempt to Distinguish from Jackson and Vallentgoed
Purpose: To support argument that the Maintenance History shows that the instrument was taken "out of service", for "consistently low...
8 views0 comments
Stephen Biss
Jan 19, 20185 min read
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...
7 views0 comments
Stephen Biss
Jan 18, 201810 min read
Durability Over Time
Purpose: To obtain admissions respecting the inadequacy of ATC / CFS recommendations in requiring "stability of metrological...
4 views0 comments
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...
8 views0 comments
Stephen Biss
Jan 17, 20184 min read
All of the Software is Legally Relevant
Purpose: To establish that the international literature indicates that all of the approved instrument's software is legally relevant to...
12 views0 comments
Stephen Biss
Jan 15, 20186 min read
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...
8 views0 comments
Stephen Biss
Jan 14, 20187 min read
Error Rates and Drift in Precision
Purpose: To establish that the ATC/CFS is not sampling from aging instruments out in the field to determine error rates To establish that...
7 views0 comments
Stephen Biss
Jan 14, 20182 min read
Federal Government Policy and Mandatory Calibration Intervals
Purpose: To obtain an admission that the ATC Position Paper of 2012 contradicts the federal government policy in the Fairness at the...
9 views0 comments
Stephen Biss
Jan 12, 20184 min read
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...
7 views0 comments
Stephen Biss
Jan 12, 20182 min read
Linearity Studies are Done on New Instruments not Aging Instruments
Purpose: To obtain admissions that the published studies dealing with the linearity of approved instruments assume a new instrument...
7 views0 comments
Stephen Biss
Jan 11, 201810 min read
Instrumental Deviations from Beer-Lambert Law
This blog entry explores the use of a university textbook during cross-examination of a CFS scientist on "Instrumental Deviations from...
80 views0 comments
Stephen Biss
Jan 11, 20184 min read
Bandwidth of Filters Changes Over Time
Sample cross-examination of CFS scientist on aging IR filters. IR instruments use light filters at the end of the sample chamber. As...
26 views0 comments
Stephen Biss
Jan 10, 20182 min read
The "known" is the original calibration of the instrument
Purpose: To separate the concepts of "calibration" from "control checks" To clarify that "calibration" is something that happens at the...
9 views0 comments
Stephen Biss
Jan 9, 201812 min read
Traceability of a Measurement Result
Purpose: To educate the Court about the meaning of "traceability" in measurement science. To obtain an admission that there is a...
48 views0 comments
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