ISO INTERNATIONAL STANDARD 11051 First edition 1994-10-01 Durum wheat (Triticum durum Desf.) - Specification Ble dur (Triticum durum Desf.) - Spécifications ISO Reference number ISO 11051:1994(E) No reproduction or networking permited without license from IHS Not for Resale ISO11051:1994(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (sO member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for 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 ofelectrotechnical standardization. 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. International Standard iSO 11051 was prepared by Technical Committee ISO/TC 34, Agricultural food products, Subcommittee SC 4, Cereals and pulses. Annexes A, B and C form an integral part of this International Standard. Annexes D and E are for information only. ISO1994 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 the publisher. International Organization for Standardization Case Postale 56 . CH-1211 Geneve 20 : Switzerland Printed in Switzerland CopyrightInternational Organization for Standardization No reproduction or networking permitted without license from IHS Not for Resale INTERNATIONAL STANDARD ISO ISO 11051:1994(E) Durum wheat (Triticum durum Desf.) Specification Scope 3 Definitions This International Standard lays down minimum For the purposes of this International Standard, the specificationsfordurumwheat(TriticumdurumDesf.) following definitions apply. intended for human consumption and forming the subject of international trade. 3.1 impurities: Damaged wheat grains and all or- ganic and inorganic materials other than durum wheat It also gives methods for the determination of the grains. level of impurities (annex A) and the proportion of non-wholly-vitreous grains (annex B). Annex C gives NOTE 1 The impurities comprise four main categories a list of typical insect pests of stored cereals. as follows: damaged durum wheat grains (3.2). other Annex D gives an informative list of harmful and toxic cereals (3.3), extraneous matter (3.4), and harmful and/or seeds. toxic seeds (3.5), bunted grains (3.6) and ergot (3.7). (See also table A.1.) 3.2 damaged durum wheat grains 2 Normative references 3.2.1 broken grains: All grains of durum wheat in which part of the endosperm is exposed, or wheat The following standards contain provisions which without germ. through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the editions indicated were valid. All standards 3.2.2 shrivelled grains: Shrivelled (shrunken), light, are subject to revision, and parties to agreements thin whole grains, in which accumulation of nutritive based on this International Standard are encouraged elements is finished owing to physiological and pathological influences, and which pass through a toinvestigatethepossibilityofapplyingthemostre cent editions of the standards indicated below. sieve with long rounded apertures 1,90 mm wide. Members of IEC and ISO maintain registers of cur- rently valid International Standards. 3.2.3 unsound grains Iso 712:1985, Cereals and cereal products Deter- 3.2.3.1 mouldy grains: Grains which have moulds mination of moisture content (Routine reference visible to the naked eye on 50 % of the surface method). and