duimetrology.com

  • Home

  • Program List

  • Blog

  • Why

  • Vocab

    • Terminology
  • About

  • DUI Metrology Dictionary

  • Instruments Database Historical

  • DUI-VIDEOS

  • More

    Use tab to navigate through the menu items.
    905-273-3322 or 1-877-273-3322
    • All Posts
    • Cross-examinations of Crown Experts
    • Tips
    • Argument
    • Cross-examinations of QT
    • Uncertainty
    • COBRA
    • Continuity
    Search
    Start By Defining "Reliability" don't focus on "Accuracy"
    Stephen Biss
    • Apr 6, 2018
    • 3 min

    Start By Defining "Reliability" don't focus on "Accuracy"

    Purpose: To remind the Court, "thing 1" in 258(1)(c) is unconstitutional under Charter 11(d) (R v St-Onge) but is saved by section 1. To remind the Court that 258(1)(c) is saved by section 1 because of Parliament's purpose which is weight consistent with scientific reliability. To demonstrate to the Court that the SCC in St-Onge relied on the paper by Brian Hodgson. To bring that paper before the Court and make it an exhibit. To ask the government scientist to concede the def
    5 views0 comments
    Stephen Biss
    • Jan 18, 2018
    • 1 min

    Durability Over Time

    Purpose: To obtain admissions respecting the inadequacy of ATC / CFS recommendations in requiring "stability of metrological characteristics" over time. To obtain admissions that the Diagnostics test function only checks stability over a few seconds at best, not over weeks, months, or years following calibration by the manufacturer. To underline the concept of "over time" in Hodgson's definition of "reliability". #Hodgson #reliability #durability #metrologicalcharacteristics
    1 view0 comments
    Short Calibration Interval and Reliability
    Stephen Biss
    • Jan 12, 2018
    • 4 min

    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 particular subject breath test result at time of use? Why does reliability depend on a recent calibration or re-calibration? Purpose: To introduce the concept of "calibration interval" To obtain admissions as to the importance of calibration interval in the international scientific literature To obtain an admission that neither the ATC/CFS no
    0 views0 comments
    Stephen Biss
    • Jan 10, 2018
    • 1 min

    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 factory, not at time of use by a qualified technician To clarify that control tests at time of testing are simply a verification (to use the CFS scientist's words) that calibration hasn't changed over time (note Hodgson concept of "over time" in his paper referred to in St-Onge) #calibration #controltest #verification #overtime
    2 views0 comments

    © 2022 Allbiss Lawdata Ltd.

    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.