ISO INTERNATIONAL STANDARD 6741-3 First edition 1987-04-15 INTERNATIONALORGANIZATIONFORSTANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXKAYHAPOAHAA OPIAHW3ALMA O CTAHAAPTV3ALMM Textiles - Fibres and yarns - Determination of commercial mass of consignments Part 3 : Specimen cleaning procedures Textiles -- Fibres et fils -- Determination de la masse commerciale d'un lot -- Partie 3:Methode de nettoyage des éprouvettes Referencenumbe ISO 6741-3:1987 (E) Foreword Iso (the International Organization for Standardization)isa worldwidefederationof 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 the Iso Council. They are approved in accordance with ISo procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 6741-3 was prepared by Technical Committee ISO/TC 38, Textiles. Users should 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. ? InternationalOrganizationforStandardization,1987 Printed in Switzerland INTERNATIONAL STANDARD ISO 6741-3 : 1987 (E) Textiles - Fibres and yarns - Determination of commercial mass of consignments Part 3 : Specimen cleaning procedures Introduction 2 References This document forms part 3 of a four-part International Stan- ISo 675, Textiles -- Woven fabrics -- Determination of dimen- dard prepared by ISO/TC 38, Textiles. sional change on commercial laundering near the boiling point. Part 1 : Mass determination and calculations. ISO 1833, Textiles - Binary fibre mixtures - Quantitative chemical analysis. Part 2: Methods for obtaining laboratory samples. Iso 4793, Laboratory sintered (fritted) filters -- Porosity Part 3: Specimen cleaning procedures. grading classification and designation. Part 4: Values used for the commercial allowances and the ISo 6348, Textiles -- Determination of mass -- Vocabulary. commercial moisture regains. (Technical Report.) ISo 6741, Textiles - Fibres and yarns -- Determination of The terminology used in this International Standard is in ac- cordance with iso 6348. commercial mass of consignements - Part 1: Mass determination and calculations Most contracts of sale between buyer and seller specify either that the invoice mass of a consignment shall be determined by - Part 2: Methods for obtaining laboratory samples. an independent third party,orthatthe seller's figure maybe subject to an independent third-party check. This part of - Part 4: Values used for the commercial allowances and ISO6741describesthemethodswhicharetobeusedbythein- the commercial moisture regains. (Technicai Report.) dependent third party in these cases.The figure for the com- mercial masswhich results from the application of thepro cedures in this part of IsO6741 eitherbecomesthe invoice Principle massof theconsignmentoriscomparedwiththedeclared in voice mass plus or minus the tolerance agreed between the The test specimen, obtained as specified in ISo 6741-1, follow- buyer and seller. ing the procedures given in ISO 6741-2, is cleaned by the method recommended for the particular fibre in ISo 6741-4. It is not intended that the methods in this part of ISO 6741 necessarilybeusedbythesellertoestablishhisinvoicemass Apparatus and reagents The methods described in this part of ISO 6741 are, for the mostpart,destructive. Conventional laboratory apparatus is required. All reagents used shall be chemically pure. Scope and field of application 5 Procedures This part of Iso 6741 sp