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Norm

ÖNORM EN 12458

Issue date: 1999 05 01

Surface active agents - Determination of stability in hard water

This European Standard specifies a rnethod of assessing the stability in hard water of surface active agents which are readily soluble at ambient temperature or slightly...
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Valid
Publisher:
Austrian Standards International
Format:
Digital | 9 Pages
Language:
German | English | Download GER/ENG
Optionally co-design standards:
This European Standard specifies a rnethod of assessing the stability in hard water of surface active agents which are readily soluble at ambient temperature or slightly higher ternperatures. 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.
ÖNORM EN 12458
1999 05 01
Surface active agents - Determination of stability in hard water
Norm
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ÖNORM EN 12829
Issue date : 1998 01 01
Surface active agents - Preparation of water with known calcium hardness (ISO 2174:1990 modified)
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ÖNORM EN ISO 3696
Issue date : 1995 08 01
Water for analytical laboratory use - Specifications and test methods (ISO 3696:1987)
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ISO 835-2:1981
Issue date : 1981 08 01
Laboratory glassware — Graduated pipettes — Part 2: Pipettes for which no waiting time is specified