ISO-4311 › Anionic and non-ionic surface active agents -- Determination of the critical micellization concentration -- Method by measuring surface tension with a plate, stirrup or ring

ISO-4311 - 1ST EDITION - CURRENT


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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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Document Number

ISO 4311:1979

Revision Level

1ST EDITION

Status

Current

Publication Date

June 1, 1979

Committee Number

ISO TC 91