BS ISO 23900-5:2015 BSl Standards Publication Pigments and extenders - Methods of dispersion and assessment of dispersibility in plastics Part 5: Determination by filter pressure value test bsi. ..making excellence a habit. BSISO23900-5:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of IS0 23900-5:2015 The UK participation in its preparation was entrusted to Technical Committee STI/1, Pigments. 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 Limited2015 ISBN9780580862656 ICS 87.060.10 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2015. Amendments issued sincepublication Date Text affected BS ISO 23900-5:2015 INTERNATIONAL ISO STANDARD 23900-5 First edition 2015-05-01 Pigments and extenders Methods of dispersion and assessment of dispersibility in plastics - Part 5: Determination by filter pressure value test Pigmentsetmatieresdecharge-Méthodesdedispersionet évaluation deI'aptitudea la dispersion dans lesplastiques Partie5:Determination de lavaleur depression du filtre lors d'un essai Referencenumber IS0 23900-5:2015(E) @ISO 2015 BS ISO 23900-5:2015 IS023900-5:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS02015 or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or Iso's member body in the country of the requester. ISO copyright office Case postale 56 : CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland i @IS02015-Allrightsreserved BS ISO23900-5:2015 IS023900-5:2015(E) Contents Page Foreword .iv 1 Scope 1 2 Normativereferences 1 3 Terms and definitions 1 4 Principle 1 5 Material 1 5.1 Colour concentrate 1 5.2 Basic test polymer 2 5.3 Testmixture. 2 .2 6 Apparatus. 6.1 General. 2 6.2 Extruder. 2 6.3 Melt pump 2 6.4 Melt pressure transducer 2 6.5 Breakerplate. 3 6.6 Filter. 3 6.6.1 General. 3 6.6.2 Screen-pack 1. 3 6.6.3 Screen-pack 2. 3 6.6.4 Screen-pack 3. 3 6.7 Sealing ring. 3 7 Preparation of test mixtures 4 7.1 General 4 7.2 Mixture 1 4 7.3 Mixture 2 4 Procedure. 8 8.1 Pre-conditioning 4 8.2 Determination 4 9 Evaluation .5 10 Test report. .6 1 11 Precision AnnexA (normative)Breakerplate .8 AnnexB (informative) Example ofatest report .9 Bibliography .10 @ IS0 2015 - All rights reserved iii BSISO23900-5:2015 IS0 23900-5:2015(E) Foreword Iso (the International Organization for Standardization)isa worldwidefederationofnational 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 ISo collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described inthe ISO/IEC Directives, Part 1. In particularthe different approval criteria needed for the different types of Iso documents should be noted. This document was drafted in accordance with the editorial rules of the ISo/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to thepossibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. Details of anypatentrightsidentifiedduringthe