DIN EN ISO 664-2008 Oilseeds - Reduction of laboratory sample to test sample (ISO 664 2008) English version of DIN EN ISO 664 2008-11《含油种子 实验室样品到试样的减少》.pdf

《DIN EN ISO 664-2008 Oilseeds - Reduction of laboratory sample to test sample (ISO 664 2008) English version of DIN EN ISO 664 2008-11《含油种子 实验室样品到试样的减少》.pdf》由会员分享，可在线阅读，更多相关《DIN EN ISO 664-2008 Oilseeds - Reduction of laboratory sample to test sample (ISO 664 2008) English version of DIN EN ISO 664 2008-11《含油种子 实验室样品到试样的减少》.pdf（9页珍藏版）》请在麦多课文档分享上搜索。

1、November 2008DEUTSCHE NORM English price group 7No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 67.200.20!$Rdh“1476569

2、www.din.deDDIN EN ISO 664Oilseeds Reduction of laboratory sample to test sample (ISO 664:2008)English version of DIN EN ISO 664:2008-11lsamen Verkleinerung der Laboratoriumsprobe auf die Untersuchungsprobe (ISO 664:2008)Englische Fassung DIN EN ISO 664:2008-11SupersedesDIN EN ISO 664:1995-07www.beut

3、h.deDocument comprises 9 pagesDIN EN ISO 664:2008-11 2 National foreword This standard has been prepared by Technical Committee ISO/TC 34 “Food products” (Secretariat: AFNOR, France), Subcommittee SC 2 “Oleaginous seeds and fruits and oilseed meals” (Secretariat: AFNOR, France) in collaboration with

4、 Technical Committee CEN/TC 307 “Oilseeds, vegetable and animal fats and oils and their by-products Methods of sampling and analysis” (Secretariat: AFNOR, France). The responsible German bodies involved in its preparation were the Normenausschuss Lebensmittel und landwirtschaftliche Produkte (Food a

5、nd Agricultural Products Standards Committee) and the Deutsche Gesell-schaft fr Fettwissenschaft e. V. (German Fat Research Society), Joint Committee Analytik von Fetten, len, Fettprodukten, verwandten Stoffen und Rohstoffen. The DIN Standard corresponding to the International Standard referred to i

6、n the EN is as follows: ISO 658 DIN EN ISO 658 Amendments This standard differs from DIN EN ISO 664:1995-07 as follows: a) Subclause 5.2 has been revised with regard to the separation of impurities. b) Clause 6 has been revised with regard to the procedure. c) Table 1 has been extended, in particula

7、r with regard to the minimum mass of the test sample. d) A bibliography has been added. e) The standard has been brought up-to-date with the current rules of presentation. Previous editions DIN 10261: 1970-06 DIN EN ISO 664: 1995-07 National Annex NA (informative) Bibliography DIN EN ISO 658, Oilsee

8、ds Determination of content of impurities EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 664June 2008ICS 67.200.20 Supersedes EN ISO 664:1995 English VersionGraines olagineuses - Rduction de lchantillon pourlaboratoire en chantillon pour essai (ISO 664:2008)lsamen - Verkleinerung der Laborato

9、riumsprobe 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 Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alterat

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

11、ionunder 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, Gree

12、ce, Hungary, 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 Ce

13、ntre: 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 664:2008: EOilseeds - Reduction of laboratory sample to test sample(ISO 664:2008)Contents Page Foreword.3 1 Scope .4 2 Normative refer

14、ences .4 3 Principle.4 4 Apparatus 4 5 Procedure 4 6 Storage of the test sample.5 Bibliography.7 2 DIN EN ISO 664:2008-11 EN ISO 664:2008 (E) Foreword This document (EN ISO 664:2008) has been prepared by Technical Committee ISO/TC 34 “Agricultural food products“ in collaboration with Technical Commi

15、ttee CEN/TC 307 “Oilseeds, vegetable and animal fats and oils and their by-products - Methods 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

16、 the latest by December 2008, and conflicting national standards shall be withdrawn at the latest 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 a

17、ny or all such patent rights. This document supersedes EN ISO 664:1995. According to the CEN/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, Eston

18、ia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, 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

19、 a EN ISO 664:2008 without any modification. 3 DIN EN ISO 664:2008-11 EN ISO 664:2008 (E) 1 Scope This International Standard specifies the procedure for obtaining a test sample from a laboratory sample of oilseeds. NOTE Some contracts for the trading of oilseeds call for analyses of the sample as d

20、rawn, 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 also be required. 2 Normative references The following referenced documents are indi

21、spensable 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, Oilseeds Determination of content of impurities 3 Principle After the separation of

22、 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, the following. 4.1 Dividing apparatus, e.g. quartering apparatus, conical divider,

23、 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 can be hermetically closed, of dimensions such that it can just accommodate the te

24、st 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 until the test sample is to be prepared. 4 DIN EN ISO 664:2008-11 EN ISO 664:2008 (E)

25、5.2 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. those that cannot be mixed in to provide a homogeneous sample. Mix the remaining sample carefully in

26、 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 obtained. For seeds not included in Table 1, the minimum mass of seeds to be obtained shall be the sa

27、me 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 homogenization and division shall be taken into account in the expression of results. 5.3 Place the resulting te

28、st 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 analyses shall be carried out within time intervals compatible with the sample stability. 5 DIN EN ISO 664

29、:2008-11 EN ISO 664:2008 (E) Table 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 acidity contents Other analysis Oil and water by NMR Large seeds and fragments Copra (kernels) Cocos nucifera Linnaeus S

30、hea 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 Castor (seeds) Ricinus communis Linnaeus Groundnut Arachis hypogaea Linnaeus Pumpkin (seeds) Cucurbita maxima Duchesne Su

31、nflower (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 pleasure (seeds) Camelina sativa (Linnaeus) Crantz Hemp (seeds) Cannabis sativa Linnaeus Linseed or solin Linum usitatissimum

32、 Linnaeus Rape (seeds) or canola Brassica napus Linnaeus Turnip rape (seeds) Brassica rapa Linnaeus Poppy (seeds) Papaver somniferum Linnaeus White mustard (seeds) Sinapis alba Linnaeus Black mustard (seeds) Brassica nigra (Linnaeus) W.D.J. Koch Brown mustard or Indian mustard (seeds) Brassica junce

33、a (Linnaeus) Czern. et Coss. Sesame (seeds) Sesamum indicum Linnaeus 20 200 100 200 100 200 aIn accordance with ISO 55071and Reference 2. 6 DIN EN ISO 664:2008-11 EN ISO 664:2008 (E) Bibliography 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/product/ISTA_List_of_Stabilized_Plant_Names_Ed_5.pdf 7 DIN EN ISO 664:2008-11 EN ISO 664:2008 (E)