BS EN ISO 2061:2015 BSl Standards Publication Textiles Determination of twist in yarns Direct counting method bsi. ..making excellence a habit. BS EN ISO 2061:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN ISO 2061:2015. It supersedes BS EN ISO 2061:2010 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee TCl/24, Physical testing of textiles. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN9780580848605 ICS 59.080.20 Compliancewitha BritishStandard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2015. Amendments/corrigenda issued since publication Date Text affected EN ISO 2061 EUROPEANSTANDARD NORMEEUROPEENNE EUROPAISCHENORM July 2015 ICS 59.080.20 Supersedes ENISO 2061:2010 English Version Textiles - Determination of twist in yarns - Direct counting method (ISO2061:2015) Textiles - Detemination de la torsion des fils - Methode par Textilien - Bestimmung der Drehung von Garnen - Direktes comptage direct (ISO 2061:2015) Zahlverfahren (ISO 2061:2015) This European Standard was approved by CEN on 20 June 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,Denmark,Estonia Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Siovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-100o Brussels @2015CEN All rights of exploitation in any form and by any means reserved Ref.No.ENISO2061:2015E worldwide for CEN national Members. BSENISO2061:2015 ENISO2061:2015 (E) Europeanforeword collaboration with Technical Committee CEN/TC 248 "Textiles and textile products” the secretariat of which is held by BSl. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2016, and conflicting national standards shall be withdrawn at the latest by January 2016. This documentsupersedes EN ISO2061:2010. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Endorsement notice The text of ISO 2061:2015 has been approved by CEN as EN ISO 2061:2015 without any modification. BSENISO2061:2015 IS0 2061:2015(E) Contents Page Foreword iv 1 Scope .1 2 Normative references. .1 3 Terms and definitions .2 4 Principle .2 5 Apparatus. .3 6 Standard atmosphere .3 7 Sampling. .3 8 Test specimens 4 .4 8.1 Length 8.1.1 Single spunyarns 4 8.1.2 Singlemultifilament,plied, and cabled yarns 4 8.2 Selection 4 8.3