Contents
The Expression of Uncertainty in Testing
[UKAS Publication ref: LAB 12]
1 Introduction 3
2 Definitions 3
3 Reporting and evaluation of uncertainty 3
4 Reasons for evaluating uncertainty 4
5 General principles 4
6 Sources of uncertainty 5
7 Estimation of uncertainty 6
8 Summary of the steps in estimating uncertainty 8
9 Method of stating results 9
10 Assessment of compliance with specification 10
11 Proficiency testing and measurement audit 12
Appendix A Definitions of terms 13
The Expression of Uncertainty in Testing