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    Internal Standards Also Need Calibration and Calibration Interval
    Stephen Biss
    • Mar 24, 2018
    • 5 min

    Internal Standards Also Need Calibration and Calibration Interval

    Purpose: To explain the function of internal standards, the ITP, internal test procedure to the Court. To obtain an admission that the ITP system needs annual or periodic maintenance, just like the optical bench, so that the instrument can continue to function in accordance with manufacturer's specifications. To obtain an admission that any adjustment or re-calibration of the optical bench also requires re-calibration of the internal standards. Sample cross-examination of a C
    3 views0 comments
    How to Calibrate - Teach an AI - Build the Inverse Logarithmic Calibration Curve
    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, Inverse Logarithmic relationship, and building the Calibration Curve based on the theory that differing ethanol concentrations have differing % absorption of IR light. To lay the groundwork for the importance of calibration and re-calibration respecting the reliability of any approved instrument. To explain the auto-calibration function of th
    7 views0 comments

    If you are a member of the public, please don't attempt to use what you see or read at this site in Court. It is not evidence. The author is not a scientist. The author has a great deal of experience in cross-examining scientists about these issues, but the author is not a scientist. Hire a criminal lawyer in private practice in Ontario. Your lawyer can retain an expert.

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    This site has been built by Allbiss Lawdata Ltd. All rights reserved. This is not a government web site.

    For more information respecting this database or to report misuse contact: Allbiss Lawdata Ltd., Mississauga, Ontario, Canada, 905-273-3322. The author and the participants make no representation or warranty  whatsoever as to the authenticity and reliability of the information contained herein.  WARNING: All information contained herein is provided  for the purpose of discussion and peer review only and should not be construed as formal legal advice. The authors disclaim any and all liability resulting from reliance upon such information. You are strongly encouraged to seek professional legal advice before relying upon any of the information contained herein. Legal advice should be sought directly from a properly retained lawyer or attorney. 

    WARNING: Please do not attempt to use any text, image, or video that you see on this site in Court. These comments, images, and videos are NOT EVIDENCE. The Courts will need to hear evidence from a properly qualified expert. The author is not a scientist. The author is not an expert. These pages exist to promote discussion among defence lawyers.

    Intoxilyzer®  is a registered trademark of CMI, Inc. The Intoxilyzer® 5000C is an "approved instrument" in Canada.

    Breathalyzer® is a registered trademark of Draeger Safety, Inc., Breathalyzer Division. The owner of the trademark is Robert F. Borkenstein and Draeger Safety, Inc. has leased the exclusive rights of use from him. The Breathalyzer® 900 and Breathalyzer® 900A were "approved instruments" in Canada.

    Alcotest® is a registered trademark of Draeger Safety, Inc. The Alcotest® 7410 GLC and 6810 are each an "approved screening device" in Canada.

    Datamaster®  is a registered trademark of National Patent Analytical Systems, Inc.  The BAC Datamaster® C  is an "approved instrument" in Canada.