EN ISO 664-2008 en Oilseeds - Reduction of laboratory sample to test sample《含油种子 实验室样品到试样的减少》.pdf

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1、BS EN ISO664:2008ICS 67.200.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDOilseeds Reductionof laboratory sampleto test sample (ISO664:2008)This British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 July 2008 BSI

2、 2008ISBN 978 0 580 58262 2Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 664:2008National forewordThis British Standard is the UK implementation of EN ISO 664:2008. Itsupersedes BS EN ISO 664:1995 which is withdrawn.The UK participation in its preparation was entrusted to Tech

3、nicalCommittee AW/307, Oil seeds, animal and vegetable fats and oils andtheir by products.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for

4、 its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 664June 2008ICS 67.200.20 Supersedes EN ISO 664:1995 English VersionOilseeds - Reduction of laboratory sample to test sample (ISO664:2008)Gra

5、ines olagineuses - Rduction de lchantillon pourlaboratoire en chantillon pour essai (ISO 664:2008)lsamen - Verkleinerung der Laboratoriumsprobe auf dieUntersuchungsprobe (ISO 664:2008)This European Standard was approved by CEN on 22 May 2008.CEN members are bound to comply with the CEN/CENELEC Inter

6、nal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member

7、.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder 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

8、 the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerla

9、nd and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue 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 6

10、64:2008: EBS EN ISO 664:2008EN ISO 664:2008 (E) 3 Foreword This document (EN ISO 664:2008) has been prepared by Technical Committee ISO/TC 34 “Agricultural food products“ in collaboration with Technical Committee CEN/TC 307 “Oilseeds, vegetable and animal fats and oils and their by-products - Method

11、s of sampling and analysis” the secretariat of which is held by AFNOR. 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 December 2008, and conflicting national standards shall be withdrawn at the l

12、atest by December 2008. Attention is drawn 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 664:1995. According to the CEN

13、/CENELEC Internal Regulations, the national 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, L

14、uxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 664:2008 has been approved by CEN as a EN ISO 664:2008 without any modification. BS EN ISO 664:2008ISO 664:2008(E) ISO 2008 All

15、rights reserved 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 in a su

16、bject 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 Commission (

17、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 technical commi

18、ttees 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 shall not b

19、e held responsible for identifying any or all such patent rights. ISO 664 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 2, Oleaginous seeds and fruits and oilseed meals. This third edition cancels and replaces the second edition (ISO 664:1990), which has been technica

20、lly revised. BS EN ISO 664:2008BS EN ISO 664:2008INTERNATIONAL STANDARD ISO 664:2008(E) ISO 2008 All rights reserved 1Oilseeds Reduction of laboratory sample to test sample 1 Scope This International Standard specifies the procedure for obtaining a test sample from a laboratory sample of oilseeds. N

21、OTE Some contracts for the trading of oilseeds call for analyses of the sample as drawn, i.e. including any impurities that may be present. However, some contracts call for the preliminary quantitative separation of impurities and analysis of the pure seed separated. Analysis of the impurities can a

22、lso be required. 2 Normative references The following referenced 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 658,

23、Oilseeds Determination of content of impurities 3 Principle After the separation of impurities of large size, if necessary, the laboratory sample is divided by appropriate means to obtain a test sample representative of the laboratory sample. 4 Apparatus Usual laboratory apparatus and in particular,

24、 the following. 4.1 Dividing apparatus, e.g. quartering apparatus, conical divider, multiple-slot divider with distribution system, or other dividing and sorting apparatus which will ensure uniform distribution of the components of the laboratory sample in the test sample. 4.2 Sample container, that

25、 can be hermetically closed, of dimensions such that it can just accommodate the test sample. 5 Procedure 5.1 On receipt of the laboratory sample, check and record the conditions of the seals and the container. Store the laboratory sample in a secure place away from heat and extremes of humidity unt

26、il the test sample is to be prepared. BS EN ISO 664:2008ISO 664:2008(E) 2 ISO 2008 All rights reserved5.2 Open the laboratory sample carefully and, without delay, carry out the following procedure. First, weigh the laboratory sample and, if necessary, separate and weigh impurities of large size, i.e

27、. those that cannot be mixed in to provide a homogeneous sample. Mix the remaining sample carefully in order to make it as uniform as possible and then, using a dividing apparatus (4.1) appropriate to the nature of the seed, reduce it successively until the minimum mass specified in Table 1 has been

28、 obtained. For seeds not included in Table 1, the minimum mass of seeds to be obtained shall be the same as that prescribed for species of similar size. If analysis of a sample free from impurities is required, follow the procedure specified in ISO 658. The separation of impurities before homogeniza

29、tion and division shall be taken into account in the expression of results. 5.3 Place the resulting test sample in a dry, clean, container (4.2), close it hermetically and label it. 6 Storage of the test sample Store the test sample in a secure place away from heat and extremes of humidity. The anal

30、yses shall be carried out within time intervals compatible with the sample stability. BS EN ISO 664:2008ISO 664:2008(E) ISO 2008 All rights reserved 3Table 1 Minimum mass of the test sample Minimum mass of the test sample g Seed Botanical name aMoisture content Impurities content Oil content Oil and

31、 acidity contents Other analysis Oil and water by NMR Large seeds and fragments Copra (kernels) Cocos nucifera Linnaeus Shea nut Butyrospermum paradoxum (C.F. Gaertner) Hepper Cotton (seeds) Gossypium spp. Oil palm kernels Elaeis guineensis N.J. Jacquin 250 1 000 500 1 000 500 500 Medium-size seeds

32、Castor (seeds) Ricinus communis Linnaeus Groundnut Arachis hypogaea Linnaeus Pumpkin (seeds) Cucurbita maxima Duchesne Sunflower (seeds) Helianthus annuus Linnaeus Soya bean Glycine max (Linnaeus) Merrill Safflower (seeds) Carthamus tinctorius Linnaeus 50 300 150 300 250 200 Small seeds Gold of plea

33、sure (seeds) Camelina sativa (Linnaeus) Crantz Hemp (seeds) Cannabis sativa Linnaeus Linseed or solin Linum usitatissimum Linnaeus Rape (seeds) or canola Brassica napus Linnaeus Turnip rape (seeds) Brassica rapa Linnaeus Poppy (seeds) Papaver somniferum Linnaeus White mustard (seeds) Sinapis alba Li

34、nnaeus Black mustard (seeds) Brassica nigra (Linnaeus) W.D.J. Koch Brown mustard or Indian mustard (seeds) Brassica juncea (Linnaeus) Czern. et Coss. Sesame (seeds) Sesamum indicum Linnaeus 20 200 100 200 100 200 aIn accordance with ISO 55071and Reference 2. BS EN ISO 664:2008ISO 664:2008(E) 4 ISO 2

35、008 All rights reservedBibliography 1 ISO 5507, Oilseeds, vegetable oils and fats Nomenclature 2 ISTA NOMENCLATURE COMMITTEE. List of stabilized plant names, 5th edition. International Seed Testing Association, Bassersdorf, 2007. 73 pp. Available (2008-05-06) at: http:/www.seedtest.org/upload/prj/pr

36、oduct/ISTA_List_of_Stabilized_Plant_Names_Ed_5.pdf BS EN ISO 664:2008BS EN ISO664:2008BSI GroupHeadquarters 389Chiswick High Road,London, W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 - British Standards InstitutionBSI is the independent national body responsible for preparing BritishStandard

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