696-75 2 6E20200 E06T59h TSo 696 NTERNATIONAL STANDARD μ-14-03 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ·MEKYHAPOAHA OPTAHI3AIIMI HIO CTAHIAPTH3ALIMM·ORGANISATION INTERNATIONALE DE NORMALISATION Surface active agents - Measurement of foaming power - Modified Ross-Miles method Agents de surface -- Mesurage du pouvoir moussant -- Méthode de Ross-Miles modifiée First edition - 1975-07-01 UDC 661.185 : 532.69 : 66.069.85 Ref. No. ISO 696-1975. (E) (E) Descriptors;surfactants,tests,measuring,foamingpower. Price based on 5 pages for Standardizati Not for Resale n or networking permitted without license from IHS 696-75 4851903 0070240 FOREWORD ISO(theInternationalOrganizationforStandardization)isaworldwidefederation of national standards institutes (IsO Member Bodies). The work of developing International Standards is carried out through IsO Technical Committees. Every Member Body interested in a subject for which a Technical Committee has been set up has the right to be represented on that Committee. International organizations, governmental and non-governmental, in liaison with isO, also take part in the work. Draft International Standards adopted by the Technical Committees are circulated to the Member Bodies for approval before their acceptance as International Standards by the Iso Councit. International Standard ISO 696 was drawn up by Technical Committee ISO/TC 91 Surface active agents. It was submitted directly to the Iso Council, in accordance with clause 6.11 of the Directives for the technical work of 1sO. This International Standard cancels and replaces Iso Recommendation R 696-1968, which had been approved by the Member Bodies of the following countries : Austria Ireland South Africa, Rep. of Belgium Israel Spain Brazil Italy Sweden Canada Japan Switzerland Chile Turkey Korea, Rep. of Czechoslovakia Netherlands Egypt, Arab Rep. of New Zealand United Kingdom France Germany Poland U.S.S.R. Greece Portugal Yugoslavia Hungary Romania No Member Body had disapproved the Recommendation. @ International Organization for Standardization, 1975 : Printed in Switzerland Not for Resale reproduction or networking permitted without licens ISO 696-1975 (E) INTERNATIONAL STANDARD 696-75 485190300702410 Surface active agents -- Measurement of foaming power - Modified Ross-Miles method 3 REFERENCES O INTRODUCTION iso 607, Surface active agents -- Detergents -- Methods of The method specified in this International Standard makes sample division. 1) it possible to check one of the characteristics of surface active agents which it is important to take into account in ISO/R 862, Surface active agents - Glossary. order to assess their potential use. ISO/R 1042, One-mark volumetric flasks. The precisely defined conditions specified for this method do not necessarily correspond to practical conditions of Iso 2174, Surface active agents - Preparation of water use. Consequently, the results obtained do not necessarity with known calcium hardness. provide information regarding the behaviour of products ISO . : ., Graduated measuring cylinders. 2) under actual conditions of application. The use of this method, and the assessment of the results obtained, must therefore depend upon the aims sought after. In particular, 4 DEFINITIONS application of the method to products having a low foaming power may lead to results which have no practical 4.1 foaming power : The ability to produce foam.3) interest. tn this International Standard, foaming power is NOTE -- characterized by the volume of foam obtained under specific experimental conditions, The decay of this volume of foam during 1 SCOPE the 5 min following its formation is also relevant. This International Standard specifies a method of measurement of the foaming power of a surface active 4.2 foam : A mass of gas cells separated by thin films of agent. liquid and formed by the juxtaposition of bubbles, giving a gas dispersed in a liquid.3) 2 FIELD OF APPLICATION 5 PRINCIPLE The method is applicable