linearity | quantitativeanalysis

Reliability: Flooded Sample Chamber 1

It is very easy for a qualified technician to accidentally flood the sample chamber on an Intoxilyzer 5000 (or 5000C) or an 8000 (or...

Change of Response at One Point but Not at Another Point that is Equivalent

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

Maybe the Instrument Is No Longer Linear Enough to Be An "8000C"

Purpose: To explore the analytical variability of the 8000C as determined by the Alcohol Test Committee during evaluation of the 8000C...

Police Fail to Correct a Linearity Problem on In-House Annual Inspection

Let's suppose that you obtain disclosure or Freedom of Information documents respecting In-house Periodic Inspections by your local...

What is measurement?

Purpose: Cross-examination of a CFS scientist on the VIM. To connect "measurement" in Canadian evidentiary breath testing to...

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...

Is an Approved Instrument Really a Screening Device?

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

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...

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...

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