Reference number
ISO 6889:1986
ISO 6889:1986
© ISO 2024
International Standard
ISO 6889:1986
Surface active agents — Determination of interfacial tension by drawing up liquid films
Edition 2
1986-03
1986-03
ISO 6889:1986
13412
Publicado
(Edición 2, 1986)
Esta publicación se revisó y confirmó por última vez en 2024.
Por lo tanto, esta versión es la actual.
Resumen
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.
Ciclo de vida
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Anteriormente
RetiradaISO 6889:1982
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Ahora