ISO INTERNATIONAL STANDARD 6741-2 First edition 1987-04-15 INTERNATIONALORGANIZATIONFOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXKAYHAPOAHAA OPIAHW3ALMA NO CTAHAAPTM3ALMM Textiles - Fibres and yarns - Determination of commercial mass of consignments Part 2 : Methods for obtaining laboratory samples Textiles - Fibres et fils -- Determination de la masse commerciale d'un lot -- Partie 2: Methodes d'obtention des échantllons pour laboratoire Reference number ISO 6741-2 : 1987 (E) ted without license from IHS Not for Resale 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 the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with Iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by least 75 % approval by the member bodies voting. Textiles. Users shouid note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. @ International Organization for Standardization, 1987 Printed in Switzerland nited without license from IHS Not for Resale INTERNATIONAL STANDARD ISO 6741-2 : 1987 (E) Textiles - Fibres and yarns - Determination of commercial mass of consignments Part 2 : Methods for obtaining laboratory samples 0 Introduction The procedures comprise : This document forms part 3 of a four-part International Stan- Nature of consignment dard prepared by ISO/TC 38, Textiles. Procedure described Hand sampling (two methods) Part 1 : Mass determination and calculations. Bulk staple in bales Core sampling Part 2 : Methods for obtaining laboratory samples. Tow and strands in bales Hand sampling and cases Part 3: Specimen cleaning procedures. Unsupported wound or coiled packages of raw silk, tow Hand sampling sliver, top or yarn in Part 4 : Values used for the commercial allowances and the containers commercial moisture regains. (Technical Report.) Cutting method Yarn wound on supports Winding (four methods) The terminology used in this International Standard is in ac- cordance with ISO 6348. Most contracts of sale between buyer and seller specify either When a replicate sample is required for other tests or as a pre- that the invoice mass of a consignment shall be determined by caution against misadventure, the mass taken during sampling an independent third party, or that the seller's figure'may be shall be doubled and the sample shall then immediately be subject to an independent third-party check. This part of halved to provide the two samples. ISO 6741 describes the methods which are to be used by the in- dependent third party in these cases. The figure for the com mercial mass which results from the application of the pro- 2 References cedures in this part of ISO 6741 either becomes the invoice ISo 6348, Textiles - Determination of mass - Vocabulary. mass of the consignment or is compared with the declared invoice mass plus or minus the tolerance agreed between the buyer and seller. ISo 6741, Textiles - Fibres and yarns -- Determination of commercial mass of consignments It is not intended that the methods in this part of ISo 6741 necessarily be used by the seller to establish his invoice mass. -- Part 1 : Mass determination and calculations. The methods described in this part of iSO 6741 are, for the -- Part 4 : Values used for the commercial allowances and most part, destructive. the commercial moisture regains. (Technical Report.) Scope and field of application Principle This part of ISO 6741 specifies methods for obtaining consignment samples obtained as specif