787/18 International Standard (TSO INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ME KAYHAPOAHAA OPFAHU3AUWA nO CTAHAAPTW3AUMWORGANISATION INTE RNATIONALE DE NORMALISATION General methods of test for pigments and extenders Part 18 : Determination of residue on sieve. Mechanical flushing procedure Methodes generales d'essai des pigments et matieres de charge - Partie 18 : Determination du refus sur tamis -- Methode mecaniqueavecliquided'entrainement Second edition -i:1983-02-15 UDC 667.622 : 620.1 : 621.928 Ref. No. ISO 787/18-1983 (E) + 2001-01 Descriptors : paints, pigments, determination, sieve residues. 11101 ne1 Price based on 4 pages Copyright International Organization for Standardization Foreword national standards bodies (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 technica! committee has been authorized 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 Council. International Standard ISO 787/18 was developed by Technicail Committee ISO/TC 35, Paints and varnishes, and was circulated to the member bodies in November 1980. It has been approved by the member bodies of the folowing countries : Austria Poland Ireland Belgium Israel Portugal Brazil Italy Romania Kenya South Africa, Rep. of Canada China Korea, Dem. P. Rep. of Spain Czechoslovakia Korea, Rep. of Sweden Egypt, Arab Rep. of Mexico Switzerland Germany, F. R. Netherlands United Kingdom Hungary Norway USSR The member body of the following country expressed disapproval of the document on technical grounds : France This International Standard cancels and replaces iS0 787/XVIlI-1973, of which it con- stitutes a technical revision. @ International Organization for Standardization, 1983 Printed in Switzerland ii Copyright International Organization for Standardization from IHS Not for Resale The purpose of this International Standard is to establish a series of general test methods for pigments and extenders which are suitable for all or many of the individual pigments and extenders for which specifications might be required. In such cases, a cross-reference to the general method shouid be included in the Internationai Standard relating to that pigment or extender, with a note of any detailed modifications which might be needed in view of the special properties of the product in question. Technical Committee ISO/TC 35, Paints and varnishes, decided that all the general methods should be published as they become available, as parts of a single Interna. tional Standard, in order to emphasize the relationship of each to the whole series. The Technical Committee also decided that, where two or more procedures were widely used for determining the same or a similar characteristic of a pigment or ex tender, there would be no objection to including more than one of them in the ISO series. In such cases it will, however, be essential to state clearly in a specification which method is to beused and, in the test report, which method has been used. Parts of the series already published are as follows : Part 1 : Comparison of colour of pigments Part 2 2 : Determination of matter volatile at 105 °C Part 3 : Determination of matter soluble in water - Hot extraction method Part 4 : Determination of acidity or alkalinity of the aqueous extract : Determination of oil absorption value Part 5 : Determination of residue on sieve -- Water method -- Manual procedure Part 7 : Determination of matter soluble in water -- Cold extraction method Part 8 Part 9 : Determination of pH value of an aqueous suspension Part 10 : Determination of density -- Pyknometer method Part 11 : Deter