INTERNATIONAL ISO STANDARD 1435 Fourthedition 1996-08-01 ANsI Intermat Dc Ear? Rubber compounding ingredients -- Carbon black (pelletized) --- Determination of fines content Ingrédients de melange du caoutchouc -- Noir de carbone (en granules) -- Détermination de lateneuren matieres fines ISO Reference number ISO14351996(E) No reproduction or networking permitted without license from IHS Not for Resale ISO1435:1996(E) Foreword ISO (the International Organization for Standardization) is a worldwide fed- eration 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 resented on that committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. IsO col- laborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft international Standards adopted by the technical committees are cir- culated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting avote. ISO/TC45,Rubberandrubberproducts,SubcommitteeSC3.Rawma- terials (including latex)foruse in the rubber industry. This fourth edition cancels and replaces the third edition (ISO 1435:1988), whichhasbeentechnicallyrevised. @ISO1996 All rights reserved Unless otherwise specified, no part of this publication may be repro- duced or utilized in any form or by any means, electronic or mechanical, including photo- copying and microfilm, without permission in writing from the publisher International OrganizationforStandardization CasePostale56CH-1211Geneve20.Switzerland Printed in Switzerland ii Copyright lntenational Organization for Standardization No reproduction or networking permited without license from IHS Not for Resale ISO 1435:1996(E) INTERNATIONAL STANDARD CISO Rubber compounding ingredients --- Carbon black (pelletized) -- Determination of fines content WARNING -- Persons using this International Standard should be familiar with normal laboratory practice. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the with any national regulatory conditions. Scope ISO1124:1988,Rubber compounding ingredients Carbon black shipment sampling procedures. ThisInternationalStandardspecifiesamethodforthe determination of the fraction of a test portion of pellet- ized carbon black that will pass through a sieve with 3 Principle 125μm nominal aperture size under specified con- ditions (i.e. the fines content). It is applicable to all A test portion of pelletized carbon black is weighed types of pelletized carbon black for use in the rubber accurately and sieved through a 125 μm aperture industry. sieve with shaking and tapping. The amount of ma- terial passing through the sieve is measured as the fines. 2 Normative references The following standards contain provisions which, Apparatus throughreferenceinthistext,constituteprovisionsof this Internationat Standard. At the time of publication, 4.1 Mechanical sieve shaker1), which imparts a uni- the editions indicated were valid. All standards are form rotary and tapping motion to a stack of 200-mm- subject to revision, and parties to agreements based diametersieves.Themechanismshall produce28oto on this International Standard are encouraged to in- 320 rotary motions per minute (4,6 to 5,3 per second) vestigate the possibility of applying the most recent and 140 to 160 taps per minute (2,3 to 2,7 per second) editions of the standards indicated below. Members toacorkfittedinthecentreofthesieve cover(4.4) of IEC and ISO maintain registers of currently valid In- andextending3mmto9mmaboveit.Onlycorkshall ternational Standards. be used, rubber being unsuitable. IsO 565:1990, Test sieves ---Metal wire cloth,perfor- 4.2 Sieve, approximately 200 mm in