INTERNATIONALSTANDARDISO5938-1979(E) H-o-S AMENDMENTSLIP Published 1980-03-01 DRGANISATIONINTERNATIONALEDENORMALISATION Cryolite, natural and artificial, and aluminium fluoride for industrial use - Determination of sulphur content--. X-rayffuorescence spectrometric method AMENDMENT MODIFICATIONTOFOREWORD(InsidefrontcOver) The IsO memberbody for the United Kingdom has now withdrawn its disapproval of this International Standard. The United Kingdom should therefore be included in the list of countries whose member bodies have approved the document. (ISO International Standard 5938 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION+MEKAYHAPOAHAR OPTAHW3AUMA NO CTAHAAPTW3AUWW+ORGANISATION INTERNATIONALE DE NORMALISATION Cryolite, natural and artificial, and aluminium fluoride for industrial use --- Determination of sulphur content - X-ray fluorescence spectrometric method Cryolithe, naturelle et artificielle, et fluorure d'aluminiumausage industriel Dosagedusoufre Methodeparspectrometriede fluorescencex First edition 1979-07-15 ISO 5938-1979 (E) UDC 553.634 + 661.862.36 : 543.845 Ref.No.ISO5938-1979 (E) Descriptors : cryolite, aluminium fluoride, chemical analysis, determination of content, suiphur, X-ray analysis, spectrophotometric analysis, atomic fluorescence spectrometry. Price based on 4 pages Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards institutes (iso member bodies). The work of developing tnterna- tional 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 theISo Council. International Standard 5938 was developed by Technical Committee ISO/TC 47. Chemistry, and was circulated to the member bodies in September 1977 It has been approved by the member bodies of the following countries : Austria Hungary Romania Belgium India South Africa, Rep. of Brazil Israel Sweden Bulgaria Italy Switzerland Czechoslovakia Kenya Turkey Egypt, Arab Rep. of Netherlands USA France New Zealand USSR Germany, F. R. Portugal Yugoslavia The member body of the following country expressed disapproval of the document on technical grounds : United Kingdom internationai Organization for Standardization,1979 Printed in Switzerland