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ISO 4311:1979

Anionic and non-ionic surface active agents -- Determination of the critical micellization concentration -- Method by measuring surface tension with a plate, stirrup or ring

General information

Valid from 01.06.1979
Directives or regulations
None

Standard history

Status
Date
Type
Name
01.06.1979
Main
The method is carried out in the following way: Determination of the surface tension of a series of solutions whose concentrations bracket the critical micellization concentration. Plotting of the graph of surface tension as a function of the logarithm of the concentration: the critical micellization concentration corresponds to a singular point on this curve. In this point the curve shows a sharp change of slope.

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