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Annual Inspections Done Without Reference to Manufacturer's Specifications
This is a sample cross-examination of an Ontario CFS scientist on the procedure used to perform an initial factory calibration (or a...
Stephen Biss
May 16, 20188 min read
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Police No Longer Follow ATC Best Practices Respecting Tolerance
Purpose of this sample cross-examination: To demonstrate that when the particular instrument was first placed into service, the tolerance...
Stephen Biss
Mar 28, 20185 min read
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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...
Stephen Biss
Jan 19, 20185 min read
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Beer-Lambert Law as Stated in Training Aid is Over-Simplified and Inadequate
This blog entry contains excerpts from the cross-examination of a CFS scientist during an over 80 trial. It was suggested to the...
Stephen Biss
Jan 10, 201811 min read
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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...
Stephen Biss
Jan 10, 20182 min read
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