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Many years ago I asked for timely disclosure/production of a representative bottle of the alcohol standard lot used during the breath...

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

Tip 25: Obtain a copy of the Guth Laboratories, Inc. wet-bath "Model 2100 Simulator Operation Manual" and study the "Model 2100-Block...

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

Tip 14: Whenever police purchase a new NIST mercury thermometer, the Canadian distributor provides them with a "Guth Laboratories, Inc....

Purpose: To obtain admissions that the opinion of the Crown expert (and indirectly the 2012 ATC Position Paper) that single point control...

Purpose: To explore the differences between a measurement instrument that has a linear relationship between the thing measured and the...

Purpose: To connect the Criminal Code and its wording about concentration of alcohol in units of blood with the International system of...

Purpose: To obtain an admission from the CFS scientist that the traceability of a measurement result on an approved instrument or a truck...

Purpose: To support argument that the Maintenance History shows that the instrument was taken "out of service", for "consistently low...

Purpose: To suggest that an AI is a quantitative analysis instrument and an ASD is a qualitative analysis instrument and suggest that the...

This blog entry explores the use of a university textbook during cross-examination of a CFS scientist on "Instrumental Deviations from...

Sample cross-examination of CFS scientist on aging IR filters. IR instruments use light filters at the end of the sample chamber. As...

Purpose: To separate the concepts of "calibration" from "control checks" To clarify that "calibration" is something that happens at the...