Foreword
Introduction
1 Scope
2 Terms and definitions
3 Principle
4 Reagents
5 Apparatus
6 Sampling
7 Preparation of test sample
8 Procedure
8.1 Check tests
8.2 Test portion
8.3 Reagent blank test
8.4 Deproteination
8.5 Determination
9 Calculation and expression of results
9.1 Calculation
9.2 Expression of results
10 Precision
10.1 Interlaboratory test
10.2 Repeatability
10.3 Reproducibility
11 Test report
Annex A (normative) Good Laboratory Practice (GLP) rules
for the performance of enzymatic analyses
Bibliography