ISO 6889:1986

Current Revision
Surface active agents -- Determination of interfacial tension by drawing up liquid films

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ISO 6889:1986

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

PUBLISH DATE 1986
ISO 6889:1986

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 the 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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