ISO INTERNATIONAL STANDARD 384 Second edition 2015-12-15 Laboratory glass and plastics ware - Principles of design and construction of volumetric instruments Matériel de laboratoire en verre ou en plastique - Principes de conception et de construction d'instruments volumétriques Reference number IS0 384:2015(E) SO International Organization for Standardization @ IS0 2015 ZHEJIANG INST OF STANDARDIZATION C15956617 vided by IHS under itted without license from IHS IS0 384:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, 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. ISOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Intenationaibr PrganizationforStandardization icensee-ZHEJIANG INST.OF STANDARDIZoISQ s1.5 - All rights reserved Not for Resale, 2016/3/29 05:05:4 etworking permitted without license from IHS IS0 384:2015(E) Contents Page Foreword ..iv 1 Scope 2 Normative references ..1 3 Terms and definitions ..1 4 Unit of volume and reference temperature 4.1 Unit of volume. .1 4.2 Reference temperature 5 Volumetric accuracy .1 6 Methods of calibration and use .2 7 Construction 3 7.1 Material 3 7.2 Wall thickness .3 7.3 Shape 3 7.4 Capacity .3 7.5 Stability 3 7.6 Delivery jets .3 7.7 Stoppers. 4 7.8 Stopcocks or similar devices. .4 8 Linear dimensions .4 9 Graduation lines. .5 10 Scales ..6 10.1 Spacing of graduation lines .6 10.2 Length of graduation lines (see Figure 2) ..6 10.2.1 General. .6 10.2.2 Graduation pattern 1 .6 10.2.3 Graduation pattern II .6 10.2.4 Graduation pattern IIl. .6 10.2.5 Special cases ..7 10.3 Sequence of graduation lines (see Figure 1) .7 10.4 Position of graduation lines (see Figure 2) ..8 11 Figuring of graduation lines .9 12 Marking .10 13 Visibility of graduation lines, figures and inscriptions. ..11 Annex A (normative) Maximum permissible error in relation to the inner diameter at the meniscus .12 Bibliography. .15 iii e=ZHEJIANG INSTOFSTANDARDIZATION C15956617 vided by IHS under lic d without license from IHS