ISO INTERNATIONAL STANDARD 8780-5 First edition 1990-11-15 ANSI Internat Doc Sec Pigments and extenders --- Methods of dispersion for assessment of dispersion characteristics --- Part 5: Dispersion using an automatic muller Pigments et matieres de charge -- Methodes de dispersion pour evaluer la dispersibilite Partie 5:Dispersiona I'aided'une broyeuse automatiquea plateaux Reference number ISO 8780-5:1990(E) rovided by IHS under license with IS( ISO 8780-5:1990(E) Foreword iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (Iso member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental,in liaisonwithIso,alsotake part in the work. Iso collaborates closely with the International Electrotechnical Commission(lEC)onallmattersofelectrotechnicalstandardization Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75 % of the member bodies casting a vote InternationalStandardiso8780-5waspreparedbyTechnicalCommittee ISO/TC35,Paintsandvarnishes. Iso8780consistsofthefollowingparts,underthegeneraititlePigments and extenders - Methods of dispersion for assessment of dispersion characteristics: 一 Part 1: Introduction .-. Part2:Dispersion usingan oscillatory shaking machine - Part 3:Dispersionusingahigh-speedimpeller mill -- Part 4: Dispersion using a bead mill --- Part 5:Dispersionusingan automaticmuller Part6:Dispersionusinga triple-roll mill Annex A forms an integral part of this part of isO 8780. CISO1990 All rights reserved.No part of this publicationmaybe reproduced or utilized inanyform orbyanymeans,electronic ormechanical,includingphotocopyingand microfilm,without permission in writing from the publisher. international OrganizationforStandardization CasePostale56·CH-1211Geneve20·Switzerland PrintedinSwitzerland i Copyright International Organization for Standardization No reproduction or networking permitted without license from IHS Not for Resale ISO 8780-5:1990(E) INTERNATIONAL STANDARD Pigments and extenders --- Methods of dispersion for assessment of dispersion characteristics Part 5: Dispersion using an automatic muller Scope Iso 8781-1:1990, Pigments and extenders -- Methods of assessmentof dispersioncharacteristics This part of 1sO 8780 specifies a method for the dis- Part 1: Assessment from the change in tinting persion of pigments and extenders using an auto- strength of coloured pigments. matic muller. It is suitable for comparing small samples in the quality control of pigments. This part Iso 8781-2:1990, Pigments and extenders -- Methods of iso 8780 is for use in conjunction with the meth- of assessment of dispersioncharacteristics ods of assessment described in IsO 8781, using an Part 2:Assessment from the change in fineness of agreed binder system of high viscosity free from grind. volatile solvents. it shouid be read in conjunction Iso 8781-3:1990, Pigments and extenders -- Methods with 1SO 8780-1. ofassessment dispersion characteristics This method is restricted to high-viscosity mill Part 3: Assessment from the change in gloss. bases. The results obtained are not for comparison with dispersibility results obtained using other methodsofdispersion. 3 Required supplementary information For any particular application, the test method specified in this part of iso 8780 needs to be com- pleted by supplementary information. The items of supplementary information are given in annex A. 2 Normative references The foliowing standards contain provisions which, Apparatus throughreferencein thistext,constituteprovisions of this part of iso 8780. At the time of publication, O