BS 8471/2007 Guide to particle sizing methods ICS 17/040/ 19/120 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Licensed Copy/ London South Bank University/ London South Bank University/ Thu Dec 20 02/42/01 GMT+00/00 2007/ Uncontrolled Copy/ (c) BSI Publishing and copyright information The BSI copyright notice displayed in this document indicates when the document was last issued/ BSI 2007 ISBN 978 0 580 53047 0 The following BSI references relate to the work on this standard/ Committee reference LBI/37 Draft for comment 06/19987355 DC Publication history First published November 2007 Amendments issued since publication Amd/ no/DateText affected BS 8471/2007 Licensed Copy/ London South Bank University/ London South Bank University/ Thu Dec 20 02/42/01 GMT+00/00 2007/ Uncontrolled Copy/ (c) BSI BSI 2007i BS 8471/2007 Contents Foreword ii 0Introduction 1 1Scope 1 2Normative reference 1 3Definitions 1 4General 1 5Particle size distribution 2 6Methods of particle size determination 3 7Aggregation 4 8Size and shape 4 9Sampling and dispersion 5 10Factors affecting the choice of sizing method 7 11Cost 13 12Calibration/ traceability/ validation and verification 13 13Particle sizing techniques 14 Annexes Annex A (informative) Flow diagrams to aid the choice of dispersion technique 18 Bibliography 20 List of figures Figure A/1 Powder dispersion procedures 18 Figure A/2 Decision trees 19 List of tables Table 1 Most commonly used particle sizing techniques 15 Table 2 Less commonly used particle sizing techniques 16 Summary of pages This document comprises a front cover/ an inside front cover/ pages i and ii/ pages 1 to 21 and a back cover/ Licensed Copy/ London South Bank University/ London South Bank University/ Thu Dec 20 02/42/01 GMT+00/00 2007/ Uncontrolled Copy/ (c) BSI BS 8471/2007 ii BSI 2007 Foreword Publishing information This British Standard was published by BSI and came into effect on 30 November 2007/ It was prepared by Technical Committee LBI/37/ Sieves/ screens and particle sizing/ A list of organizations represented on this committee can be obtained on request to its secretary/ Hazard warnings The guidance contained in this British Standard is of a general nature/ It cannot take account of hazards associated with specific materials which/ when subjected to recommended treatments may be dangerous/ Information about this document Users of this guide are directed to relevant Health and Safety (e/g/ COSHH 2002 1) regulations/ which require potential users of any procedure to assess hazards associated with it and to document the precautions appropriate to the risk/ Contractual and legal considerations This publication does not purport to include all the necessary provisions of a contract/ Users are responsible for its correct application/ Compliance with a British Standard cannot confer immunity from legal obligations/ Licensed Copy/ London South Bank University/ London South Bank University/ Thu Dec 20 02/
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