EN ISO 5983-2:2009

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Preparation of test sample
9 Procedure
   9.1 General
   9.2 Test portion
   9.3 Determination
   9.4 Blank test
   9.5 Recovery tests
10 Calculation and expression of results
   10.1 Calculation
   10.2 Calculation of crude protein content
   10.3 Expression of crude protein content results
11 Precision
   11.1 Interlaboratory tests
   11.2 Repeatability
   11.3 Reproducibility
12 Test report
Annex A (informative) - Results of interlaboratory tests
Annex B (informative) - Results of a proficiency test; comparison
        of the colorimetric and potentiometric endpoint
        determination of the titration
Bibliography