measurement uncertainty

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You will find the following content on this site:

• Guide: A full html-version of the guide. The full text can be searched using an excite search engine.
• Examples: You may submit your uncertainty evaluations and seek comments on them in the forum. These examples will be posted here, but there will be no guarantee that they fully comply with the content of the guide.
• Glossary: Definition of terms we need to understand each other.
• Info: Contact, information, links, lectures, faq, ...
• Search: Search the guide and website.
• Help: Additional help concerning this website.

If you would like to print the guide, "Quantifying Uncertainty in Analytical Measurement" 2nd edition, you can down load the pdf-file (730 kByte). You can also order a hard copy (ISBN 0 948926 15 5). You find the detailed order information in the Info section.

Additional relevant Eurachem/CITAC guides:

• 'Use of uncertainty information in compliance assessment' (2007) In order to decide whether a result indicates compliance or non-compliance with a specification, it is necessary to take into account the measurement uncertainty associated with the result. This guide provides guidance on how uncertainty may be taken into account in deciding compliance with a limit.
  The guide is applicable to decisions on compliance with regulatory or manufacturing limits where a decision is made on the basis of a measurement result accompanied by information on the uncertainty associated with the result. It covers cases where the uncertainty does not depend on the value of the measurand, and cases where the uncertainty is proportional to the value of the measurand.
  The guide includes a discussion and general recommendations, followed by more detailed instructions on establishing rules for interpretation and by several examples.
  You may download the guide at no cost in Adobe acrobat format in one of two versions:
  • High resolution pdf (1.5 MB)
  • Low resolution pdf (128 kB)
• 'Traceability in Chemical Measurement' (2003) This Guide gives detailed guidance for the establishment of measurement traceability in quantitative chemical analysis, based on the definition in the international vocabulary of basic and general terms in metrology (VIM). Though it is aimed principally at testing and measurement laboratories carrying out chemical measurement, the principles are expected to apply from routine analysis to basic research. The document is also intended to assist laboratories in meeting the requirements on traceability of results given in ISO 17025.
  You may download the guide at no cost in Adobe acrobat format in one of two versions:
  • Hight resolution pdf (2.0 MB).
  • Low resolution pdf (699.8 kByte)

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