EN 903:1993
Current
The latest, up-to-date edition.
Water quality - Determination of anionic surfactants by measurement of the methylene blue index MBAS (ISO 7875-1:1984 modified)
29-10-1993
Cooperating organizations
National foreword
Foreword
Method
1. Introduction
2. Scope and field of application
3. References
4. Principle
5. Reagents
6. Apparatus
7. Sampling and samples
8. Procedure
9. Expression of results
10. Interferences
11. Test report
Figure
1. Gas-stripping apparatus
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references
Under the experimental conditions, sulfonates and sulfates are the compounds chiefly measured, but some positive and negative interferences can occur (see clause 10). The method is applicable to drinking water, surface water as well as waste water, e.g. for the determination of the primary degradation of surfactants being under investigation in test systems containing natural or synthetic waste water. This applies for both laboratory scaled and technical waste water treatment plants.
| Committee |
CEN/TC 230
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| NF EN 903 : 1994 | Identical |
| UNE-EN 903:1994 | Identical |
| NEN EN 903 : 1994 | Identical |
| BS EN 903:1994 | Identical |
| I.S. EN 903:1994 | Identical |
| PN EN 903 : 2002 | Identical |
| NBN EN 903 : 1994 | Identical |
| SNV DIN EN 903 : 1994 | Identical |
| UNI EN 903 : 1995 | Identical |
| NS EN 903 : 1ED 1993 | Identical |
| DIN EN 903:1994-01 | Identical |
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