Dark uncertainty

General Paper


Standard uncertainties obtained by the GUM approach for a range of analytical methods are compared directly and indirectly with estimates of reproducibility standard deviation for the same methods. Results were obtained from both routine analysis and international key comparisons. A general tendency for the uncertainty to be substantially less than the reproducibility standard deviation was found.


Uncertainty Dark uncertainty Reproducibility conditions GUM 


  1. 1.
    ISO/IEC Guide 98:1995 (1995) Guide to the expression of uncertainty in measurement (GUM). ISO, GenevaGoogle Scholar
  2. 2.
    Analytical Methods Committee (1995) Analyst 120:2303–2308CrossRefGoogle Scholar
  3. 3.
    Horwitz W, Albert R (1997) Analyst 122:615–617CrossRefGoogle Scholar
  4. 4.
    Horwitz W (2003) J AOAC Internat 86:109–111Google Scholar
  5. 5.
    Moroto A, Boqué R, Riu J, Ruis X (1999) Trend Anal Chem 18:577–584CrossRefGoogle Scholar
  6. 6.
    Hund E, Massart DL, Smeyers-Verbeke J (2001) Trends Anal Chem 20:394–406CrossRefGoogle Scholar
  7. 7.
    Williams A, Ellison SLR, Roesslein M (Eds) (2000) Eurachem/CITAC guide. Quantifying uncertainty in analytical measurement, 2nd edn. Available from the Eurachem secretariat and website (http://www.eurachem.com/) and (hard copy). LGC Ltd, London (ISBN: 0-948926-15-5)
  8. 8.
    Barwick VJ, Ellison SLR (1998) Anal Commun 35:377–383CrossRefGoogle Scholar
  9. 9.
    Thompson M (2000) Analyst 125:385–386CrossRefGoogle Scholar
  10. 10.
    Thompson M, Guffogg S, Stangroom S, Osborne P, Keys P, Wood R (2002) Analyst 127:1669–1675CrossRefGoogle Scholar
  11. 11.
    Populaire S, Giménez EC (2006) Accred Qual Assur 10:485–493CrossRefGoogle Scholar
  12. 12.
    Ellison SLR, Mathieson K (2008) Accred Qual Assur 13:231–238CrossRefGoogle Scholar
  13. 13.

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  1. 1.School of ScienceBirkbeck University of LondonLondonUK
  2. 2.LGC LtdTeddingtonUK

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