Procedure for evaluating and expressing the uncertainty of measurement
After reading this article you will..
understand that the essential component of evaluation on uncertainty is careful identification of all factors that contribute to the uncertainty.
know that the total uncertainty of a test within laboratory will thus consist of three components: uncertainty within a test, uncertainty between occasions in the same laboratory and uncertainty between laboratories.
Based on: Jokio, P., Hiertner, M., Reliability of results in physical testing of pulp and paper (Chapter 13). In: Levlin, J-E. & Sjöderhelm, L. (ed), Pulp and paper testing (Book 17), Papermaking Science and Technology. Jyväskylä. 1999. Fapet Oy. pp. 257 – 267.
References:
Evaluation of measurement data — Guide to the expression of uncertainty in measurement (GUM), issued by BIPM, IEC, IFCC, ISO, IUPAC and OLIM, International Organization for Standardization JCGM 100:2008 (2008).
EAL-G23 ”Expression on uncertainty in quantitative testing”, European cooperation for Accreditation of Laboratories (1996).
