ISO INTERNATIONAL STANDARD 13079 First edition 2011-07-15 Laboratory glass and plastics ware Tubes for the measurement of the erythrocyte sedimentation rate by the Westergren method Materiel de laboratoire en verre et en plastique - Tubes pour le mesurage de la vitesse de sedimentation des érythrocytes par la méthode Westergren Reference number ISO 13079:2011(E) @ ISO 2011 by IHS under ted without license from IHS Not for Resale ISO 13079:2011(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, 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 [email protected] Web www.iso.org Published in Switzerland @ ISO 2011 - All rights reserved py IHS unde Not for Resale ISO 13079:2011(E) Contents Page Foreword 1 Scope 2 Normative reference 3 Material. 3.1 General . 3.2 Glass.. 3.3 Plastics 4 Single-use Westergren tubes..... 4.1 General design. 4.2 Straightness.. 4.3 Finish. 4.4 Dimensions 4.5 Graduation and figuring. 4.6 Inscriptions. 4.7 Labelling.. 5 Re-usable Westergren tubes 5.1 Generaldesign 5.2 Straightness .. 5.3 Finish. 5.4 Dimensions 5.5 Graduation and figuring... 5.6 Inscriptions 5.7 Labelling .... 6 Support for Westergren tubes 6.1 Construction 6.2 Graduation and figuring. 6.3 Inscriptions. 7 Graduation and figuring.. 7.1 Graduation .... 7.2 Figuring of graduation lines 8 Marking 9 Labelling. 9.1 Single-use Westergren tubes. 9.2 Re-usable Westergren tubes Annex A (normative) Type test for rigidity of Westergren tubes 9 Annex B (normative) Type test for contamination and interfering substances . 10 Annex C (normative) Type test for straightness of Westergren tubes. Annex D (informative) Measurement of the erythrocyte sedimentation rate by the Westergren reference method .. Bibliography.... Copyright International Organization for Standardizalon ghts reserved ii Not for Resale