ISO INTERNATIONAL STANDARD 18763 First edition 2016-07-01 Soil quality Determination of the toxic effects of pollutants on germination and early growth of higher plants Qualité du sol - Determination des effets toxiques des polluants sur la germination et la croissance primaire des plantes supérieures Reference number IS0 18763:2016(E) ISO International Organization for Standardization e=ZHEJIANG INST OF STANDARDIZATION C1 5956617 @IS02016 mitted without license from IHS IS0 18763:2016(E) COPYRIGHT PROTECTEDDOCUMENT IS0 2016, 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. 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 Licensee-ZHEJIANG INST OF STANDARDIZAISQ 0d6 - All rights reserved Not for Resale, 2016/8/16 08:30:01 networking permited without license from IHS IS0 18763:2016(E) Contents Page Foreword .iv Introduction ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Principle .3 5 Reagents, test organisms and media .3 6 Apparatus and materials. ..4 7 Treatment and preparation of samples .6 8 Procedure ..6 9 Measurement ..8 10 Calculation of the percentage inhibition .9 11 Reference chemical .10 12 Precision ..10 13 Validity criteria ..11 14 Test report .11 Annex A (informative) Application of the phytotoxicity test in transparent test plates on natural and artificial soils and soil materials, with different plant species ..12 Annex B (informative) Assemblage of test plates for the phytotoxicity test .14 Annex C (informative) International interlaboratory comparisons on the phytotoxicity test ..15 Bibliography .20 iii See=ZHEJIANG INST OF STANDARDIZATIONC1 5956617 thout license from IHS