EN ISO 4044-2008 8392 Leather - Chemical tests - Preparation of chemical test samples《皮革 化学试验 化学试样的制备》.pdf

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1、BRITISH STANDARDBS EN ISO 4044:2008Leather Chemical tests Preparation of chemical test samplesICS 59.140.30g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g4

2、7g36g58Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 4044:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee B

3、SI 2008ISBN 978 0 580 57416 0National forewordThis British Standard is the UK implementation of EN ISO 4044:2008. It supersedes BS EN ISO 4044:1998 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee TCI/69, Footwear, leather and coated fabrics.A list of o

4、rganizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal oblig

5、ations.Amendments/corrigenda issued since publicationDate Commentson 30 May 2008Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN

6、ISO 4044February 2008ICS 59.140.30 Supersedes EN ISO 4044:1998 English VersionLeather - Chemical tests - Preparation of chemical test samples(ISO 4044:2008)Cuir - Essais chimiques - Prparation des chantillons pouressais chimiques (ISO 4044:2008)Leder - Chemische Prfungen - Vorbereitung von Probenfr

7、chemische Untersuchungen (ISO 4044:2008)This European Standard was approved by CEN on 3 February 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up

8、-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunde

9、r the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hun

10、gary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: r

11、ue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 4044:2008: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networkin

12、g permitted without license from IHS-,-,-EN ISO 4044:2008 (E) Foreword This document (EN ISO 4044:2008) has been prepared by Technical Committee CEN/TC 289 “Leather“, the secretariat of which is held by UNI in collaboration with Technical Committee ISO/TC IULTCS “International Union of Leather Techn

13、ologists and Chemists Societies“. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2008, and conflicting national standards shall be withdrawn at the latest by August 2008. Attention is draw

14、n to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 4044:1998. According to the CEN/CENELEC Internal Regulations, the natio

15、nal standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, P

16、oland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN ISO 4044:2008Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 4044:2008(

17、E) IULTCS/IUC 3:2008(E) iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested

18、 in a subject for which a technical committee has been established 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. ISO collaborates closely with the International Electrotechnical Comm

19、ission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technic

20、al committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO sha

21、ll not be held responsible for identifying any or all such patent rights. ISO 4044/IUC 3 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, in collaboration with the Chemical Tests Commission of the International Union of Leather Technologists a

22、nd Chemists Societies (IUC Commission, IULTCS), in accordance with the Agreement on technical co-operation between ISO and CEN (Vienna Agreement). It is based on IUC 3 originally published in J. Soc. Leather Trades Chemists, 49, pp. 8-10, 1965, and declared an official method of the IULTCS in 1965.

23、IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to further the advancement of leather science and technology. IULTCS has three Commissions, which are responsible for establishing international methods for sampling and the testing of leather. ISO reco

24、gnizes IULTCS as an international standardizing body for the preparation of test methods for leather. This second edition cancels and replaces the first edition (ISO 4044:1977), which has been technically revised. BS EN ISO 4044:2008Copyright European Committee for Standardization Provided by IHS un

25、der license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-blankCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 4044:2008(E)IULTCS

26、/IUC 3:2008(E)1Leather Chemical tests Preparation of chemical test samples 1 Scope This International Standard specifies a method for the preparation of a test sample of leather for chemical analysis. This method is applicable to all types of leather. 2 Normative references The following referenced

27、documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2419, Leather Physical and mechanical tests Sample preparation and con

28、ditioning 3 Principle Leather is ground in a cutter mill to form “ground leather” or “leather powder”. 4 Apparatus 4.1 Cutter mill, having a blade rotational frequency of 700 to 1 000 revolutions per minute and a perforated sieving plate with 4 mm ( 0,5 mm) diameter perforations. The mill blades sha

29、ll be sharp. 5 Preparation of the test sample Before grinding, the samples of leather should be reduced to small pieces. The precise size of the small pieces is not detailed here as they will be defined by the design of the cutter mill feed system. Ensure that the cutter mill and sample collecting d

30、evice are clean. Water should not be used for cleaning. If sufficient sample is available, then a few small pieces of test leather should be ground and discarded, with the apparatus being cleaned again before proceeding with grinding the main test sample. Test pieces that are wet (in excess of 30 %

31、moisture) should be pre-dried at a temperature not exceeding 50 C. The drying temperature should be selected with consideration of the influence of elevated temperature on the nature of the analyte. If the samples are dried at elevated temperature, they shall be conditioned according to ISO 2419. BS

32、 EN ISO 4044:2008Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 4044:2008(E) IULTCS/IUC 3:2008(E) 2 6 Storage of the test sample The ground test sample shall be mixed thorou

33、ghly and placed in a clean, dry, airtight container. The container shall be kept away from localized sources of heat. BS EN ISO 4044:2008Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from I

34、HS-,-,-blankCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 4044:2008BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent nation

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