Foreword
Introduction
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 Control of oxygen supply
9.4 Calibration
9.5 Determination
9.6 Detection and integration
10 Calculation and expression of results
10.1 Calculation
10.2 Expression of results
11 Precision
11.1 Interlaboratory tests
11.2 Repeatability
11.3 Reproducibility
11.4 Critical difference
11.5 Uncertainty
12 Test report
Annex A (informative) - Flowchart for a basic Dumas apparatus
Annex B (informative) - Schematic diagrams of suitable types
of Dumas apparatus
Annex C (informative) - Equipment calibration
Annex D (informative) - Examples of factors for converting
nitrogen content to protein content
Annex E (informative) - Results of interlaboratory tests
Bibliography