NEN EN ISO 9408 : 1999
Current
The latest, up-to-date edition.
WATER QUALITY - EVALUATION OF ULTIMATE AEROBIC BIODEGRADABILITY OF ORGANIC COMPOUNDS IN AQUEOUS MEDIUM BY DETERMINATION OF OXYGEN DEMAND IN A CLOSED RESPIROMETER
12-01-2013
1 Scope
2 Terms and definitions
3 Principle
4 Test environment
5 Reagents
6 Apparatus
7 Procedure
8 Calculation and expression of results
9 Validity of results
10 Test report
Annex A (informative) Example of calculation of theoretical oxygen demand
Annex B (informative) Correction of oxygen uptake for interference by
nitrification
Annex C (informative) Example of a biodegradation curve
Annex D (informative) Closed respirometer
Bibliography
Defines a method, by determination of the oxygen demand in a closed respirometer, for the evaluation in aqueous medium of the ultimate biodegradability of organic compounds and waste waters at a given concentration by aerobic microorganisms.
| DevelopmentNote |
Supersedes NEN ISO 9408. (10/2002)
|
| DocumentType |
Standard
|
| PublisherName |
Netherlands Standards
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| UNI EN ISO 9408 : 2006 | Identical |
| UNE-EN ISO 9408:2000 | Identical |
| BS EN ISO 9408:1999 | Identical |
| EN ISO 9408:1999 | Identical |
| ISO 9408:1999 | Identical |
| DIN EN ISO 9408:1999-12 | Identical |
| I.S. EN ISO 9408:1999 | Identical |
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