ISO-6889 › Surface active agents -- Determination of interfacial tension by drawing up liquid films

ISO-6889 - 2ND EDITION - CURRENT


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The determination is carried out in the following way: Measurement of the maximum force which can be exerted before the film breaks, the force being exerted vertically on a stirrup or ring, in contact with he interfacial liquid film between two immiscible liquid phases placed in a measuring cup, in order to draw up the interfacial film. The force must pass through a maximum, otherwise the measurement is not valid.

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Document Number

ISO 6889:1986

Revision Level

2ND EDITION

Status

Current

Publication Date

March 15, 1986

Committee Number

ISO TC 91