Contents Foreword 1. Scope 2. Normative References 3. Principles 4. Reagents and materials 5. Instruments and equipments 6. Analytical procedures 6.1 Sample preparation 6.2 The preparation of the measurement solution of the sample 6.3 The preparation of the iodine standard measurement solution 6.4 Measurement 7. The calculation and representation of the results 8. Precision |