top of page

DUI Metrology Dictionary

duidictionary.com

BIPM

Bureau International Des Poids et Mesures: "the intergovernmental organization through which Member States act together on matters related to measurement science and measurement standards." The BIPM was created by the Metre Convention, which was signed on 20 May 1875. Visit www.bipm.org. Think of the BIPM as the office for the CGPM.

The BIPM web site is a very good source of infomation about metrology - measurement science. Lawyers, law students, and forensic science students will find helpful international literature therein.

It is important to note that Canada's Weights and Measures Act requires:

"Basis for units of measurement

4 (1) All units of measurement used in Canada shall be determined on the basis of the International System of Units established by the General Conference of Weights and Measures."

If the BIPM is the intergovernmental organization through which Canada acts together with other Member states on matters related to measurement science and measurement standards, then surely any provincial or federal reference to measurement (specifically quantitative analysis) in a statute or reg must connect to the definitions and standards set by the BIPM for the CGPM of which Canada is a member. Canadian references in a statute or reg to a concentration, distance, time, or mass must be construed and applied in the context of the work done by the BIPM. It is therefore a major error for Canada's Courts to not make reference to the standards published by the BIPM when making rulings concerning measurements for forensic purposes. Forensic science that ignores the publications of the BIPM produces flawed forensic evidence. Reliance on an entity which publishes without reference, footnote, or connection to the BIPM will result in flawed forensic evidence.

When cross-examining and arguing, defence lawyers should use the vocabularies and terminology of the BIPM and related international organizations rather than the usual words judicially considered. Judges should ensure that when they construe and apply Canadian statutes, and apply existing case law, that they cross-reference, connect, and adjust to BIPM and related vocabularies.

Link to bipm.org
Blog article: "What are the CGPM and BIPM? Is Canada a member?"

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. The author is a retired lawyer, not a lawyer in private practice. Read the statement of the purpose of this web site below.

© 2025 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.

bottom of page