ISO INTERNATIONAL STANDARD 4683-1 First edition 1998-03-01 Raw sheep skins - Part 1: Descriptions of defects Peaux brutes de moutons Partie 1: Descriptions des defauts ISO Reference number ISO 4683-1:1998(E) Noreproductionornetworkingpemitedwithout licensefromHS Not for Resale ISO 4683-1:1998(E) Foreword 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. 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 4683-1 was prepared by Technical Committee ISO/TC 120, Leather, Subcommittee SC 1, Raw hides and skins, including pickledpelts. isO 4683 consists of the following parts, under the general title Raw sheep skins: Part 1:Descriptions of defects - Part 2: Designation and presentation ISO1998 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 OrganizationforStandardization Casepostale56.CH-1211Geneve20.Switzerland Internet [email protected] X.400 C=ch; a=400net; p=iso; 0=isocs; S=central Printed in Switzerland ii I without license from IHS Not for Resale INTERNATIONAL STANDARD ISO ISO 4683-1:1998(E) Raw sheep skins -- Part 1: Descriptions of defects 1 Scope This part of ISO 4683 describes the defects which may occur on raw sheep skins (see note 1). It is applicable to fresh and cured (air dried, wet salted or dry salted) sheepskins. NoTE 1 Those defects which may appear only during or after tanning, without there being any indication of their presence on the raw skins, have also been listed in this part ofISO4683. 2Defects The defects listed in this part of ISO 4683 are divided into the following three categories: a) Ante-mortem defects, b) Post-mortem defects, and c) Preserving defects. 2.1 Ante-mortem defects 2.1.1 Abscesses; cysts Either tearing or hardening of the dermis caused by the presence of raised lumps on wooled sheep skins. 2.1.2 Defects peculiar to wool-on skin and breakage; and b) Wool/hair slips (tendency towards loss of wool/hair, as a result of illness), 2.1.3 Canary yellow wool Canary yellow wool is wool with a bright yellow unscourable stain within the wool staple. it is caused by micro-organisms that grow in the fleece when it is damp the wool fibres. Not for Resale