ISO 8022:1990

Current Revision
Surface active agents -- Determination of wetting power by immersion

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Surface active agents -- Determination of wetting power by immersion

PUBLISH DATE 1990

A cotton disc of known nature and characteristics, held in a grip, is immersed in a solution of surface active agent of known concentration.

After displacement of air and penetration of the solution into the cloth, the cotton disc starts to sink.

The wetting time is determined by measuring the interval between the moment of immersion of the cotton disc and the moment when it begins to sink.

The wetting time is determined for two standard solutions, each at five different concentrations, and then for the surface active agent solution under test, also at five different concentrations.

The three curves "wetting time / concentration" are plotted and compared.

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