NBN EN ISO 9439 : 2000

1 Scope
2 Definitions
3 Principle
4 Test environment
5 Reagents
6 Apparatus
7 Procedure
8 Calculation
9 Validity of results
10 Test report
Annex A (informative) Principle of a
        test system for measuring
        carbon dioxide (example)
Annex B (informative) Examples of the
        determination of released
        carbon dioxide
Annex C (informative) Example of a
        biodegradation curve
Annex D (informative) Combined
        determination of carbon
        dioxide and DOC
Bibliography

Specifies a method, by analysis of released carbon dioxide, for the evaluation in an aqueous medium of the "ultimate" biodegradability of organic compounds at a given concentration by aerobic micro-organisms. Applies to organic compounds which are: insoluble in the test conditions; soluble in the test conditions; not inhibitory to the test micro-organisms at the concentration chosen for the test; non-volatile or which have a negligible vapour pressure under the conditions of the test. Coverage includes definitions, reagents, apparatus and procedure.