INTERNATI0NAL STANDARD (ISO) 1554 Wrought and cast copper alloys -- Determination of copper content -- Electrolytic method Alliages de cuivre corroyes et moulés -- Dosage du cuivre -- Methode électrolytique First edition -- 1976-11-15 ISO 1554-1976 (E) Ref. No. ISO 1554-1976 (E) UDC 669.3 : 543.25 Descriptors : copper alloys, chemical analysis, determination of content, copper, electrolytic analysis. Price based on 2 pages FOREWORD Iso (the International Organization for Standardization) is a worldwide federation 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 Internationai Standards by the ISO Council. Prior to 1972, the results of the work of the technical committees were published as Iso Recommendations; these documents are in the process of being transformed into International Standards. As part of this process, Technical Committee hasreviewed copper alloys, ISO Recommen- ISO/TC 26, and dation R 1554-1971 and found it technically suitable for transformation. Standard ISO 1554 therefore replaces ISO Recommen- International dation R 1554-1971, to which it is technically identical. ISO following countries : Australia India South Africa, Rep. of Belgium Spain Iran Israel Sweden Canada Italy Switzerland Czechoslovakia Netherlands Thailand Egypt, Arab Rep. of Turkey Finland New Zealand Norway France United Kingdom Germany Peru U.S.A. Hungary Poland Yugoslavia No member body had expressed disapproval of the Recommendation. The member bodies of the folliowing countries disapproved the transformation of the Recommendation into an International Standard : Hungary Italy Internationat Organization for Standardization,1976 : Printed in Switzerland ISO 1554-1976 (E) INTERNATIONAL STANDARD Wrought and cast copper alloys --- Determination of copper content --- Electrolytic method 1 SCOPE AND FIELD OF APPLICATION 5.2 Electrolysis equipment, the electrodes of which meet the following requirements : This International Standard specifies an electrolytic method for the determination of the copper content of 5.2.1 Platinum cathode, Winkler type1), made preferably wrought and cast copper-zinc alloys, copper-aluminium from gauze containing approximately 400 meshes per alioys and copper-nickel-zinc alloys, as listed in the relevant square centimetre (50 meshes per linear inch),woven from ISO publications. wire of diameter approximately 0,20 mm. The cathode shall be stiffened by doubling the gauze for about 3 mm at the top and the bottom of the cylinder or by reinforcing 2 REFERENCES the gauze at the top and bottom with a platinum band o Iso 1553, Unalloyed copper containing not less than ring. The diameter of the cylinder shall be 30 to 50 mm and 99,90 % of copper -- Determination of copper content -- the height 40 to 60 mm. The stem shall be made from a Electrolytic method. platinum alloy wire, such as platinum-iridium, platinum rhodium or platinum-ruthenium, having a diameter of ISO/R 1811, Chemical analysis of copper and copper approximately 1,30 mm, flattened and welded the entire alloys -- Sampling of copper refinery shapes. length of the gauze. The overall height of the cathode shall be approximately 130 mm. The cathode shall be sandblasted. 3PRINCIPLE Electrolytic determination of the copper content of a 5.2.2 Spiral anode, made of platinum alloy wire of fluoroboric-nitric acid solution of a test portion. minimum diameter 1 mm, formed into a spiral of seven turns, having a height of approximately 50 mm and a diameter of 12 mm, the overall height being