ISO INTERNATIONAL STANDARD 18301 First edition 2014-09-01 Animal and vegetable fats and oils Determination of conventional mass per volume (litre weight in air) Oscillating U-tube method Corps gras d'origines animale et vegétale Détermination de la masse volumique conventionnelle (poids du litre dans I'air) Méthode du tube en U oscillant Reference number IS0 18301:2014(E) ISO @IS02014 No repr mitted without license from IHS Not for Resale IS0 18301:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2014 All rights reserved. Unless otherwise specified, 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 Case postale 56 : CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland @ IS0 2014 - All rights reserved or networking permited without license from IHS Not for Resale IS0 18301:2014(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions 4 Principle ..1 5 Apparatus ..2 6 Reagents 7 Sampling. ..2 8 Preparation of the test sample and test portion ..2 9 Procedure ..3 9.1 Apparatus preparation .3 9.2 Apparatus calibration 4 9.3 Measurement .4 10 Calculation .4 11 Precision 11.1 Interlaboratory test. ..5 11.2 Repeatability limit, r. .5 11.3 Reproducibility limit, R .5 12 Test report ..5 Annex A (informative) Interlaboratory test .6 Bibliography .8 iii ed without license from IHS Not for Resale