ISO INTERNATIONAL STANDARD 9161 Second edition 2019-02 Uranium dioxide powder Determination of apparent density and tap density Poudre de dioxyde d'uranium - Détermination de la masse Reference number IS0 9161:2019(E) [so @ IS0 2019 IS0 9161:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form 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 CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Fax: +41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland i @ IS0 2019 - All rights reserved IS0 9161:2019(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Principle 4.1 Apparent density. 1 4.2 Tap density 1 5 Apparatus. ..2 6 Sampling and samples .3 7 Procedure ..3 7.1 Safety precautions. .3 7.2 Calibration ..4 7.3 Determination of the apparent density .4 7.4 Determination of tapped density 7.5 Number of determinations. .4 7.6 Quality control. 8 Expression of results 8.1 Method of calculation ..5 8.2 Precision 5 9 Test report Bibliography 7 @ IS0 2019 - All rights reserved iii