ISO 6497-2002 Animal feeding stuffs - Sampling《动物饲料 抽样》.pdf
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1、 Reference number ISO 6497:2002(E) ISO 2002INTERNATIONAL STANDARD ISO 6497 First edition 2002-11-15 Animal feeding stuffs Sampling Aliments des animaux chantillonnage ISO 6497:2002(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file m
2、ay be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat acc
3、epts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that t
4、he file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any
5、 form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749
6、 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2002 All rights reservedISO 6497:2002(E) ISO 2002 All rights reserved iiiContents Page Foreword iv 1 Scope 1 2 Terms and definitions. 1 3 General principles. 2 4 Sampling personnel 2 5 Identification and general inspection of
7、 the lot prior to sampling. 3 6 Sampling equipment. 3 7 Sample containers 4 8 Procedure. 4 8.1 Sampling location. 4 8.2 Classification of products for the purpose of sampling . 4 8.3 Sample size 5 8.4 Sampling of grains, seeds, pulses and pellets 5 8.5 Sampling of meals and powders . 7 8.6 Sampling
8、of roughages 9 8.7 Sampling of licks and blocks. 10 8.8 Sampling of liquids . 11 8.9 Sampling of semi-liquid (semi-solid) products 14 9 Packing, sealing and marking of samples and sample containers . 15 10 Sampling report. 16 Annex A (informative) Feeding stuffs containing undesirable substances whi
9、ch are likely to be non- uniformly distributed, including mycotoxins, castor-oil seed husks and poisonous seeds 17 Bibliography 19 ISO 6497:2002(E) iv ISO 2002 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
10、(ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, g
11、overnmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/I
12、EC Directives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the mem
13、ber bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 6497 was prepared by Technical Committee ISO/TC 34, Food
14、 products, Subcommittee SC 10, Animal feeding stuffs. Annex A of this International Standard is for information only. INTERNATIONAL STANDARD ISO 6497:2002(E) ISO 2002 All rights reserved 1Animal feeding stuffs Sampling 1 Scope This International Standard specifies methods of sampling animal feeding
15、stuffs, including fish feed, for quality control for commercial, technical and legal purposes. It is not applicable to pet foods. Nor are the methods intended for sampling for the purpose of microbiological examination. Conditions of, and requirements for, sampling are specified separately for feedi
16、ng stuffs of different physical natures. For certain categories of animal feeding stuff, specific methods of sampling are specified in other International Standards. A list of these can be found in the bibliography. When sampling the products specified, it is these methods which shall be used. Metho
17、ds of sampling for the determination of substances likely to be non-uniformly distributed are described in Annex A. 2 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 2.1 consignment a specified quantity of feeding stuff on offer, disp
18、atched or received at one time NOTE It may consist of one or more lots (see 2.2). 2.2 lot an identified quantity of a consignment having characteristics presumed to be uniform NOTE The uniformity of the characteristics may be due, for example, to the fact that the products are supplied by a single p
19、roducer always using the same production process, where production is stable and the individual characteristics follow a normal distribution or a close approximation to a normal distribution (note that special circumstances can give rise to subdivisions in the distribution). Consequently, the term “
20、lot” means an “inspection lot” in sampling, i.e. a quantity of material or a collection of items (a population) from which a sample is to be drawn and inspected. It may therefore differ from a collection of items referred to as a lot in the shipment context, for example. 2.3 increment a quantity of
21、material taken at one time from a single point in a lot 2.4 bulk sample a quantity of material obtained by combining and mixing all the increments taken from the same lot NOTE A collection of distinct and identifiable increments intended for separate investigation may be denoted the “gross sample”.
22、ISO 6497:2002(E) 2 ISO 2002 All rights reserved2.5 reduced sample a representative part of the bulk sample, obtained by a process of successive division or reduction in such a manner that the mass or volume approximates to that of the laboratory samples 2.6 laboratory sample a sample representative
23、of the quality and condition of the lot, obtained by division of the reduced sample and intended for analysis or other examination NOTE For each sample taken, three or four laboratory samples are normally produced. One of these should be submitted for testing and at least one stored for reference pu
24、rposes. If more than four laboratory samples are required, the quantity of the reduced sample will have to be increased so that the minimum quantity requirement for all laboratory samples can be met. 3 General principles 3.1 Representative sampling The purpose of representative sampling is to obtain
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