Failures of the global measurement system. Part 1: the case of chemistry
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This discussion puts a case of advocatus diaboli: that the Treaty of the Metre, its associated administrative apparatus and the International System of measurement units (SI) has basically failed for chemical measurement and is largely irrelevant to modern analysis, much of practical measurement in modern economies and much of recent technology. The practical use of the chemical unit termed the mole, the introduction to the SI units of the thermodynamic mole and the invention of a new physical quantity called “amount of substance” are each reviewed with the conclusion that the current means of expressing the results of chemical measurements are unsatisfactory in both practice and theory and are imposing large and readily avoidable costs on all advanced economies.
KeywordsTreaty of the metre Mole Amount of substance Metrology
I thank the editors and referees for their dialogue as well as their patience. The still fallible discussion before you is very much the better for their engagement but all errors remain my responsibility. I join the editors in cordially inviting further discussion.
- 2.Silsbee F (1949) Establishment and maintenance of the electrical units, National Bureau of Standards Circular 475, 30 June, Gaithersburg, USAGoogle Scholar
- 6.De Boer J (1968–1970) Some general aspects of the international system of units. Recuil de Traveaux du BIPM, volume 2, SevresGoogle Scholar
- 7.Mills I, Milton M (2009) Amount of substance and the mole. Chemistry International volume 31 No 2 http://www.iupac.org/publications/ci/20093102/1_mills.html
- 12.Mars Climate Orbiter Mishap Investigation Board (1999) Phase 1 Report Nov 10 NASA ftp://ftp.hq.nasa.gov/pub/pao/reports/1999/MCO_report.pdf
- 13.Price G (1997) Traceability in analysis: why 19th century physics makes lousy 21st century chemistry. Metrology Society of Australia: Proceedings of the second biennial conference, pp 289–294Google Scholar