2197 NTERNATIONAL STANDARD (tso INTERNATIONAL ORGANIZATION FORSTANDARDIZATION·MEKJYHAPOAHAAOPIAHM3ALMI1OCTAHAAPTM3ALIMM·ORGANISATIONINTERNATIONALE DENORMALISATION Sodium hydrogen carbonate for industrial use -- List of methods of test and preparation .of the test sample First edition - 1972-06-01 ISO 2197-1972 (E) UDC 661.321.8 : 543 Ref.No. ISO 2197-1972 (E) Descriptors:sodium carbonates,chemical analysis,sampling. Price based on 1 page 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 International Standards by the Iso Councit. International Standard IsO2197 was drawn up by Technical Committee ISO/TC47,Chemistry. It was approved in May 1971 by the Member Bodies of the following countries: Austria Israel South Africa, Rep. of Belgium Italy Spain Bulgaria Korea,Rep.of Switzerland Chile Netherlands Turkey Egypt, Arab Rep. of New Zealand United Kingdom France Poland U.S.A. Germany Portugal U.S.S.R. Hungary Romania The Member Body of the following country expressed disapprovat of the document on technical grounds: India @InternationalOrganization forStandardization,1972. Printed in Switzerland or Standardization No reproduction or networking permited without license from IHS Not for Resale