NS EN 903 : 1ED 1993
Current
The latest, up-to-date edition.
WATER QUALITY - DETERMINATION OF ANIONIC SURFACTANTS BY MEASUREMENT OF THE METHYLENE BLUE INDEX MBAS
12-01-2013
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
ALSO NUMBERED AS BS 6068: SECTION 2.23: 1994. Describes how natural and synthetic anionic surface active substances may be determined as methylene-blue active substances (MBAS). Mentions the MBAS index, a summary parameter method. Coverage includes reagents, apparatus and procedure.
| DevelopmentNote |
Supersedes NS 4739. (04/2008)
|
| DocumentType |
Standard
|
| PublisherName |
Norwegian Standards (Norges Standardiseringsforbund)
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| UNI EN 903 : 1995 | Identical |
| ISO 7875-1:1996 | Identical |
| BS EN 903:1994 | Identical |
| UNE-EN 903:1994 | Identical |
| EN 903:1993 | Identical |
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