ISO INTERNATIONAL STANDARD 8587 Second edition 2006-11-01 Sensory analysis Methodology - Ranking Analyse sensorielle-Methodologie Classement par rangs Reference number ISO 8587:2006(E) @ ISO 2006 ISO8587:2006(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 ISO2006 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 [email protected] Web www.iso.org Published in Switzerland @ ISO 2006 - All rights reserved ISO8587:2006(E) Contents Page Foreword. iv 1 Scope 2 Normativereferences 3 Terms and definitions. 4 Principle 5 General test conditions.. 6 Assessors 6.1 Qualification 6.2 Number of assessors 6.3 Preliminary discussion. < Procedure 7.1 Presentation of the samples. 7.2 Reference samples 7.3 Test technique... 7.4 Answerform.. 8 Expression and interpretation of results.. 8.1 Summaryoftheresultsandcalculationoftheranksums.. 8.2 Statistical analysis and interpretation ... 9 Test report... 9 Annex A (normative) Determination of the test conditions . .15 Annex B (informative) Practical example of application Complete block design. Annex C (informative) Practical example of application - Balanced incomplete block design .. ....18 Annex D (informative) Example of an answer forn 20 Bibliography. ion'ghts reserved ili ISO 8587:2006(E) 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 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/lEc Directives, Part 2. 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 document may be the subject of patent ISO 8587 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 12, Sensory analysis. This second edition cancels and replaces the first edition (isO 8587:1988), which has been technically revised. @ IS0 2006 - All rights reserved INTERNATIONAL STANDARD ISO 8587:2006(E) Sensory analysis Methodology Ranking 1 Scope This International Standard describes a method for sensory evaluation with the aim of placing a series of test samples in rank order. This method allows for assessing differences among several samples based on the intensity of a single attribute, of several attributes1) or of an overall impression. It is used to find if differences exist, but cannot determine