Provisional Recommendations
Provisional Recommendations
Metrological Traceability of Measurement Results in Chemistry
In commerce, society, and science, metrological comparability of measured quantity values and various published values is essential to determine their spatio-temporal differences, ratios, and drifts. Achieving metrological comparability of measurement results requires definition of calibration hierarchies providing metrological traceability chains which enable the establishment of metrological traceability of measured quantity values to a common metrological reference.
Experience has shown that the understanding of the concepts involved, their relation, role, definition, and use is insufficient and varied. Consequently, an attempt is made in this study to arrive at a set of consistent concept systems with associated terminology for measurement in chemistry. The systems build on definitions of concepts and associated terms from the new 3rd edition (2007) of the International Vocabulary of Metrology—Basic and General Concepts and Associated Terms, such as quantity, measurand, calibration, measurement procedure, measurement uncertainty, measurement standard, calibrator, and reference material. Additional concepts such as metrological equivalence of measurement results are also given.
Flow charts of generic calibration hierarchies are presented as well as a variety of examples.
The establishment, assessment, and reporting of metrological traceability are discussed, including the needed metrological institutional hierarchy and the role of interlaboratory comparisons.
Recommendations are made about the essential steps in planning and performing a measurement, and reporting a measurement result.
Comments by 29 February 2008
Prof. Paul De Bièvre
TEL: +[32] 14 851 338
FAX: +[32] 14 853 908
E-MAIL: paul.de.bievre@skynet.be
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- Provisional Recommendations
- Molecules that Matter
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- Data Mining
- Thermophysical Properties
- Luminescence Spectrometry
- Green Chemistry
- Mark Your Calendar
- Index for 2007
Articles in the same Issue
- Masthead
- From the Editor
- Contents
- Why on Earth Be(come) an IUPAC Member?
- IUPAC in Torino, Italy
- Part I: Their Role in Society
- Nanotechnology–The New Chemistry
- For a Healthy Smile . . .
- Performance Materials: A Symposium and New Award
- 2008 IUPAC–Richter Prize in Medicinal Chemistry: Call for Nominations
- IUPAC to Support the International Chemistry Olympiad
- Standard Atomic Weights Revised
- Release of InChI Version 1.02 beta; Introducing InChIKey
- Chemical Risk Assessment Methodology
- A Tribute to Professor Aubrey D. Jenkins
- Errata
- Herding AnIMLs (no, it’s not a spelling mistake): Update on the IUPAC and ASTM Collaboration on Analytical Data Standards
- Multiple Uses of Chemicals: Clear Choices or Dodgy Deals?
- Establishing an East Asian Network for Organic Chemistry
- Critically Evaluated Rate Coefficients for Free-Radical Polymerization Part 6: Propagation Rate Coefficient of Methacrylic Acid in Aqueous Solution (IUPAC Technical Report)
- Explanatory Dictionary of Key Terms in Toxicology (IUPAC Recommendations 2007)
- Quantities, Units, and Symbols in Physical Chemistry: 3rd edition
- Natural Product Chemistry at a Glance
- Macromolecules for a Sustainable, Safe, and Healthy World
- Provisional Recommendations
- Molecules that Matter
- Environmental Technology and Renewable Energy
- Data Mining
- Thermophysical Properties
- Luminescence Spectrometry
- Green Chemistry
- Mark Your Calendar
- Index for 2007
