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Norm
ISO 696:1975
Issue date: 1975 07 01
Surface active agents — Measurement of foaming power — Modified Ross-Miles method
After 500 ml of a solution of the substance to be tested have flowed down from a height of 450 mm onto the surface of the same solution, the volume of foam formed is meas...
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Valid
Publisher:
International Organization for Standardization
Format:
Digital | 5 Pages
Language:
English
ICS
After 500 ml of a solution of the substance to be tested have flowed down from a height of 450 mm onto the surface of the same solution, the volume of foam formed is measured, This method is applicable to all surface active agents, but solutions of easy-hydrolizable substances do not give reliable results because the hydrolysis products accumulate in the liquid films and affect the steadiness of the foam.