1、BRITISH STANDARD BS EN ISO 1061:1999 Incorporating Corrigendum No. 1 Plastics Unplasticized cellulose acetate Determination of free acidity The European Standard EN ISO 1061:1999 has the status of a British Standard ICS 83.080.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
2、BS EN ISO 1061:1999 This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 October 1999 BSI 03-2001 ISBN 0 580 35107 6 National foreword This British
3、 Standard is the English language version of EN ISO 1061:1999. It is identical with ISO 1061:1990. This British Standard supersedes BS 2782-4 method 459A:1991 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/82, Thermoplastic materials, which has t
4、he responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their
5、corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electron
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7、 the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a f
8、ront cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, page ii, pages 1 and 2, the annex ZA page and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd
9、. No. Date Comments 10819 Corr. No. 1 March 2001 Addition of supersession details to national forewordBS EN ISO 1061:1999 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK vi
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