EN ISO 6497:2005

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Futtermittel - Probenahme (ISO 6497:2002)Aliments des animaux - Echantillonnage (ISO 6497:2002)Animal feeding stuffs - Sampling (ISO 6497:2002)65.120KrmilaAnimal feeding stuffsICS:Ta slovenski standard je istoveten z:EN ISO 6497:2005SIST EN ISO 6497:2005en01-junij-2005SIST EN ISO 6497:2005SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN ISO 6497March 2005ICS 65.120English versionAnimal feeding stuffs - Sampling (ISO 6497:2002)Aliments des animaux - Echantillonnage (ISO 6497:2002)Futtermittel - Probenahme (ISO 6497:2002)This European Standard was approved by CEN on 17 February 2005.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-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 6497:2005: ESIST EN ISO 6497:2005

Foreword
The text of ISO 6497:2002 has been prepared by Technical Committee ISO/TC 34 "Agricultural food products” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 6497:2005 by Technical Committee CEN/TC 327 "Animal feeding stuffs - Methods of sampling and analysis", the secretariat of which is held by NEN.
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 September 2005, and conflicting national standards shall be withdrawn at the latest by September 2005.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 6497:2002 has been approved by CEN as EN ISO 6497:2005 without any modifications.
Reference numberISO 6497:2002(E)© ISO 2002
INTERNATIONAL STANDARD ISO6497First edition2002-11-15Animal feeding stuffs — Sampling Aliments des animaux — Échantillonnage
ISO 6497:2002(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may 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 Adobe's licensing policy. The ISO Central Secretariat accepts 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 the 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 form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's 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 09 47 E-mail
copyright@iso.ch Web
www.iso.ch Printed in Switzerland
ii © ISO 2002 – All rights reserved
ISO 6497:2002(E) © ISO 2002 – All rights reserved iii Contents 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 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 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 which 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 reserved Foreword 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 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 Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC 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 member 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 products, Subcommittee SC 10, Animal feeding stuffs. Annex A of this International Standard is for information only. SIST EN ISO 6497:2005

INTERNATIONAL STANDARD ISO 6497:2002(E) © ISO 2002 – All rights reserved 1 Animal feeding stuffs — Sampling 1 Scope This International Standard specifies methods of sampling animal feeding 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 feeding 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. Methods 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, dispatched 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 producer 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 “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 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”. SIST EN ISO 6497:2005

ISO 6497:2002(E) 2 © ISO 2002 – All rights reserved 2.5 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 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 purposes. 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 a small fraction from a lot in such a way that a determination of any particular characteristic of this fraction will represent the mean value of the characteristic of the lot. The lot shall be sampled by repeatedly taking increments at various single positions in the lot. These increments shall be combined by mixing to form a bulk sample from which representative laboratory samples shall be prepared by dividing. 3.2 Selective sampling If portions of the material to be sampled show a noticeable difference in quality from the rest of the material, such portions shall be separated from the material and treated as a separate lot. In such cases, mention shall be made of this fact in the sampling report. If it is not possible to divide the material into separate lots, the material shall be sampled as one lot, and the sampling report shall indicate this fact. The proportion of the product suspected to be different shall be given, if possible. 3.3 Statistical considerations Acceptance sampling is the usual method of sampling for animal feeding stuffs. For sampling by attributes, there is a theoretical sampling plan based on a binomial distribution, but, for practical purposes, this plan has been simplified to a square-root relationship between the lot size and the number of increments. NOTE 1 With bulk products, sample variances can be expected to be acceptably uniform if, for lots up to 2,5 tonnes, at least seven increments are taken and, for lots between 2,5 tonnes and 80 tonnes, the number of increments taken is at least equal to 20m, where m is the mass, in tonnes, of the lot. If the lot exceeds 80 tonnes, the square-root relationship is still applicable, but the risk of making incorrect decisions on the basis of the samples increases. However, this can be the subject of agreement between the interested parties. NOTE 2 The
...