Foreword
Introduction
1 Scope
2 Terms and definitions
3 Principles
3.1 Global approach for the estimation of measurement
uncertainty (MU)
3.2 Consideration of bias
4 General aspects
4.1 Combined standard uncertainty
4.2 Standard deviation of reproducibility
4.3 Expanded uncertainty
4.4 General rules for the estimation of the reproducibility
standard deviation
5 Intralaboratory standard deviation of reproducibility
5.1 General
5.2 Experimental protocol
5.3 Calculations
6 Reproducibility standard deviation of the method derived
from an interlaboratory study
6.1 General
6.2 Use in food microbiology
7 Reproducibility standard deviation derived from an
interlaboratory proficiency trial
8 Calculation of expanded uncertainty
8.1 Introduction
8.2 Calculation
9 Expression of measurement uncertainty in the test reports
Annex A (informative) - Results of trials on the uncertainty
component linked to the sub-sampling of test portion
and to the preparation of the initial suspension
Annex B (informative) - Values of C[lim] and relative limits
Bibliography