ISO INTERNATIONAL STANDARD 91 First edition 2017-05 Petroleum and related products - Temperature and pressure volume correction factors (petroleum measurement tables) and standard reference conditions Pétrole et produits connexes - Facteurs de correction de volume par rapport a la température et a la pression (tables de mesure du pétrole) et conditions de réference standard Reference number ISO 91:2017(E) International Organization for Standardization @ IS0 2017 =ZHEJIANG INST OF STANDARDIZATION C1 5956617 Not for Resale, 2017/8/21 01:05:05 mitted without license from IHS IS0 91:2017(E) COPYRIGHT PROTECTED DOCUMENT IS0 2017, Published in Switzerland 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 Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Internationai ibrg DrganizationforStandardization icensee-ZHEJIANG INSTOF STANDARDIZAoISQ 07 - All rights reserved networking permited without license from IHS IS0 91:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references .... 3 Terms and definitions ..2 4 Sources and usage guidelines for volume correction factors .2 4.1 Source of volume correction factors. .2 4.2 Usage guidelines. .3 Annex A (informative) Changes to previous standards .5 Annex B (normative) Standard reference conditions ..7 Annex C (informative) Titles of petroleum measurement tables given in the API-ASTM-IP- GPA standards for volume correction factors. ..8 Annex D (informative) Other volume corrections factors standards .14 Bibliography. .15 iii Licensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 thout license from IHS