Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Stages in the planning of an inter-laboratory test
programme for the determination of the precision of
a test method
4.1 General
4.2 Preparing a draft method of test
4.3 Planning a pilot programme with at least two
laboratories
4.4 Planning the inter-laboratory programme
4.5 Executing the inter-laboratory programme
5 Inspection of inter-laboratory results for uniformity
and for outliers
5.1 General
5.2 Transformation of data
5.3 Tests for outliers
5.4 Rejection of complete data from a sample
5.5 Estimating missing or rejected values
5.6 Rejection test for outlying laboratories
5.7 Confirmation of selected transformation
6 Analysis of variance, calculation and expression of
precision estimates
6.1 General
6.2 Analysis of variance
6.3 Expectation of mean squares and calculation of
precision estimates
6.4 Expression of precision estimates of a method of test
7 Significance of repeatability (r) and reproducibility (R)
7.1 General
7.2 Repeatability, r
7.3 Reproducibility, R
8 Specifications
8.1 Aim of specifications
8.2 Construction of specifications limits in relation
to precision
9 Quality control against specifications
9.1 General
9.2 Testing margin at the supplier
9.3 Testing margin at the recipient
10 Dispute procedure
Annex A (normative) Determination of number of samples
required
Annex B (informative) Derivation of equation for calculating
the number of samples required
Annex C (normative) Notation and tests
Annex D (normative) Example results of test for determination
of bromine number and statistical tables
Annex E (normative) Types of dependence and corresponding
transformations
Annex F (normative) Weighted linear regression analysis
Annex G (normative) Rules for rounding off results
Annex H (informative) Explanation of equations given in Clause 7
Annex I (informative) Specifications that relate to a specified
degree of criticality
Bibliography