BS 6068-2.80(2002) : 2002

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Interferences
6 Reagents
7 Apparatus
8 Sample collection and preservation
9 Preparation of tubes and instrument set-up
10 Analytical procedure for measurement of samples
11 Calculation of results
12 Expression of results
13 Test report
14 Precision
Annex A (informative) Comparison between the COD method
        according to ISO 6060 and the method described
        in this International Standard
Annex B (informative) Hazards
Annex C (informative) Information on the use of commercial
        small-scale ST-COD test kits utilizing photometric
        detection
Annex D (informative) Low-range sealed-tube photometric
        method (up to 150 mg/l)
Annex E (informative) Low-range sealed-tube titrimetric
        method (up to 150 mg/l)
Annex F (informative) Screening test for samples with
        high chloride concentrations
Annex G (informative) Precision data
Bibliography

Defines a method for the determination of the chemical oxygen demand (ST-COD) using the sealed tube method. The test is empirical and is applicable to any aqueous sample, which includes all sewage and waste waters.