ISO-1063 › Surface active agents -- Determination of stability in hard water

ISO-1063 - 1ST EDITION - CURRENT


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Solutions of the substance to be tested in differing concentrations are mixed with hard water solutions of differing known calcium hardness. After leaving the solutions to stand in specified conditions their appearance, i.e. clearness, opalescence, cloudiness or precipitation is observed. The 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.

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Document Number

ISO 1063:1974

Revision Level

1ST EDITION

Status

Current

Publication Date

Dec. 15, 1974

Committee Number

ISO TC 91