EN 12458:1999
Current
The latest, up-to-date edition.
Surface active agents - Determination of stability in hard water
17-02-1999
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Principle
5 Reagents
6 Apparatus
7 Procedure
8 Expression of results
9 Test report
Annex A (informative) Units used to express water
hardness
This European Standard specifies a method of assessing the stability in hard water of surface active agents which are readily soluble at ambient temperature or slightly higher temperatures. This method is applicable to surface active agents soluble in water at 20 °C. It can be extended to those which are soluble at approximately 50 °C.
| Committee |
CEN/TC 276
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| UNI EN 12458 : 2001 | Identical |
| SN EN 12458 : 1999 | Identical |
| UNE-EN 12458:1999 | Identical |
| PN EN 12458 : 2001 | Identical |
| BS EN 12458:1999 | Identical |
| NF EN 12458 : 1999 | Identical |
| DIN EN 12458:1999-04 | Identical |
| NBN EN 12458 : 1999 | Identical |
| NEN EN 12458 : 1999 | Identical |
| NS EN 12458 : 1ED 1999 | Identical |
| I.S. EN 12458:1999 | Identical |
| CEN/TS 17035:2017 | Surface Active Agents - Bio-based surfactants - Requirements and test methods |
| S.R. CEN/TS 17035:2017 | SURFACE ACTIVE AGENTS - BIO-BASED SURFACTANTS - REQUIREMENTS AND TEST METHODS |
| PD CEN/TS 17035:2017 | Surface Active Agents. Bio-based surfactants. Requirements and test methods |
| EN 12829:2011 | Surface active agents - Preparation of water with known calcium and magnesium hardness |
| ISO 2174:1990 | Surface active agents Preparation of water with known calcium hardness |
| ISO 835-2:1981 | Laboratory glassware Graduated pipettes Part 2: Pipettes for which no waiting time is specified |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| EN ISO 3696:1995 | Water for analytical laboratory use - Specification and test methods (ISO 3696:1987) |
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