ISO INTERNATIONAL 12985-2 STANDARD Second edition 2018-05-16 Carbonaceous materials used in the production of aluminium Baked anodes and cathode blocks - Part 2: Determination of apparent density and of open porosity using a hydrostatic method Produits carbones utilises pourla production de I'aluminium- Anodescuitesetblocs cathodiques- Partie 2: Determination de la masse volumique apparente et de la porositéouverteparuneméthodehydrostatique Referencenumber ISO12985-2:2018(E) ISO @IS0 2018 @ IS0 2018, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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 Ch.deBlandonnet8 ·CP401 CH-1214 Vernier,Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org ii ISO 2018-Allrights reserved Contents Page Foreword iv 1 Scope 1 2 Normative references .1 3 Termsand definitions .1 4 Principle .1 5 Reagents. .1 6 Apparatus. .2 7 Sampling. .2 8 Procedure. .2 12 8.1 Determinationofdrysamplemass 8.2 Determinationofthevolume 2 9 Calculation .3 10 Precision .3 Apparent density 3 10.1 10.1.1 Repeatability 3 10.1.2Reproducibility 3 10.2 Openporosity. 3 10.2.1 Repeatability 3 10.2.2 Reproducibility 4 11 Test report. .4 Bibliography 5 @ IS0 2018 - All rights reserved iii