Foreword
1 Scope
2 Principle
3 Fundamentals
4 Apparatus
5 Reagents
6 Sampling and preparation of test samples
7 Calibration
8 Procedure
9 Calculation
10 Expression of results
11 Precision
12 Test report
Annex A (informative) - Results of inter-laboratory study
Annex B (informative) - Wavelength and working range
Annex C (informative) - Possible Interferences and their
elimination
Annex D (informative) - Information regarding the evaluation
of the uncertainty of the mean value
Annex E (informative) - Commercial certified reference
materials
Bibliography