BS EN ISO 5983-2:2009
Current
The latest, up-to-date edition.
Animal feeding stuffs. Determination of nitrogen content and calculation of crude protein content Block digestion and steam distillation method
Hardcopy , PDF
English
31-07-2009
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
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