4851903 00458468 6228-80 10-7-01 INTERNATIONAL STANDARD ISO 6228-1980(E)/ERRATUM Published 1981-12-01 INTERNATIONALORGANIZATIONFORSTANDARDIZATION·MEKAYHAPOAHAAOPTAHM3ALWAOCTAHAAPTW3ALMW.ORGANISATIONINTERNATIONALEDENORMALISATION Chemical products for industrial use -- General method for determination of traces of sulphur compounds, as sulphate, by reduction and titrimetry ERRATUM Page 3 Table Delete "From 4,5 to 450", and substitute : "From 45 to 450" 4851903 0045847 T 6228-80 6228 International Standard (ISO 0 -7/-6/ INTERNATIONAL ORGANIZATION FOR STANDARDIZATION+MEKAYHAPOAHAR OPFAHW3ALMA HO CTAHAAPTW3ALWWORGANISATION INTERNATIONALE DENORMALISATION Chemical products for industrial use - General method for determination of traces of sulphur compounds, as sulphate, by reduction and titrimetry Produits chimiques a usage industriel -- Methode generale de dosage, a I'état de sulfate, de traces de composes soufrés, par réduction et titrimétrie First edition - 1980-11-01 UDC 543.242.8 : 546.221/.226 Ref.No. ISO 6228-1980 (E) ISO 6228-1980 (E) Descriptors : chemical analysis, determination of content, sulphur, trace elements, reduction analysis, volumetric analysis, test equipment. Price based on 7 pages hashoo Eo6Tsgh 6228-80 1 Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards institutes (Iso member bodies). The work of developing Inter- national 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 approvai before their acceptance as International Standards by the ISO Council. International Standard ISO 6228 was developed by Technical Committee ISO/TC 47, Chemistry, and was circulated to the member bodies in November 1978. It has been approved by the member bodies of the following countries : Hungary Australia Romania Austria India South Africa, Rep. of Belgium Israel Switzerland Turkey Bulgaria Italy China United Kingdom Korea, Rep. of Czechoslovakia Mexico USSR Netherlands Yugoslavia Egypt, Arab Rep. of France New Zealand Germany, F. R. Poland No member body expressed disapproval of the document. This International Standard has also been approved by the International Union of Pure and Applied Chemistry (IUPAC). International Organization for Standardization, 1980 . Printed in Switzerland