ISO-11265-1994.pdf
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1、 4853903 Ob83479 T 9 T INTERNATIONAL STANDARD IS0 11265:1994 TECHNICAL CORRIGENDUM 1 Published 1996-1 0-1 5 INTERNATKINAL ORGANIZATION FOR STANDARDMTKN* MWYHAPOAHAR ONAHHJAUHR no CTAHAAPTH3ALIHH. ORGANISATION INTERNATIONALE DE NORMALISATION Soil quality - Determination of the specific electrical con
2、ductivity TECHNICAL CORRIGENDUM 1 Qualit du sol - Dtermination de la conductivit lectrique spcifique RECTIFICATIF TECHNIQUE I Technical Corrigendum 1 to International Standard IS0 1 1265:1994 was prepared by Technical Committee ISO/TC 190, Soil quality, Subcommittee SC 3, Chemical methods and soil c
3、haracteristics. Pages 2 and 3 Subclauses 7.2.1 and 7.2.2 Replace the existing text by the following: 7.2.1 Measure the conductance (G) of the pc.-issium chloride solutions (4.2 to manual of the instrument. 7.2.2 Calculate, for each potassium chloride solution, a cell constant according to 4) accordi
4、ng to the instruction K K = S G where This material is reproduced from IS0 documents under International Organization for Standardization (ISO) Copyright License number IHSIICCII996. Not for resale. No part of these IS0 documents may be reproduced in any form, electronic retrieval system or otherwis
5、e, except as allowed in the copyright law of the country of use, or with the prior written consent of IS0 (Case postale 56,1211 Geneva 20, Switzerland, Fax +41 22 734 10 79), IHS or the IS0 Licensors members. . . , . K is the cell constant, in reciprocal metres; . K is the specific electrical conduc
6、tivity of one of the potassium chloride solutions, in millisiemens per metre; G is the conductance of the same potassium chloride solution, in millisiemens. Use the average of the calculated values as the cell constant of the instrument. The calculated cell constant shall not differ by more than 5 Y
7、O from the value given by the manufacturer ICs 13.080 Ref. No. IS0 11265:1994/Cor.l:1996(E) Descriptors: soils, quality, tests, soil testing, determination. electrical properties, electrical conductivity. O IS01996 Printed in Switzerland Copyright International Organization for Standardization Provi
8、ded by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:39:11 MDTNo reproduction or networking permitted without license from IHS -,-,- 4853903 Ob83480 701 H IS0 11265:1994/Cor. 1:1996(E) Subclause 7.3 In the second line, replace the symbol xm b
9、y K , . 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:39:11 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 13265 94 4853903 0577229 404 I NT
10、ER NATI O NAL STANDARD IS0 11265 First edition 1994-1 0-01 Soil quality - Determination of the specific electrical conductivity Qualit du sol - Dtermination de la conductivit lectrique spcifique Reference number IS0 1 1265:1994(E) Copyright International Organization for Standardization Provided by
11、IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:39:11 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 11265 44 = 48511703 0577230 126 IS0 11265:1994(E) Foreword IS0 (the International Organization for Standardizati
12、on) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be re
13、presented on that committee. International organizations, governmental and non-governmental, in liaison with 60, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Stand
14、ards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 1 1265 was prepared by Technical Committee iSO/TC 190, Soil quality, Su
15、bcommittee SC 3, Chemical methods and soil characteristics. Annex A of this International Standard is for information only. 0 IS0 1994 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, inc
16、luding photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 CH-1 21 1 Genve 20 Switzerland Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Li
17、censee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:39:11 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 3L2b5 94 Y85I.1903 0577233 Ob2 = INTERNATIONAL STANDARD Q IS0 IS0 11265:1994(E) Soil quality - Determination of the specific electrical condu
18、ctivity 1 Scope NOTE 1 For definitions of the concepts used, see IS0 7888. This International Standard specifies an instrumental method for the routine determination of the specific electrical conductivity in an aqueous extract of soil. Reagents The determination is carried out to obtain an indicati
19、on of the content of water-soluble electrolytes in a soil. Use only reagents of recognized analytical grade. This International Standard is applicable to all types of air-dried soil samples. 4.1 Water, with a specific electrical conductivity not higher than 0,2 mS/m at 25 “C (grade 2 water ac- cordi
20、ng to IS0 3696). 4.2 Potassium chloride solution, 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the editions indicated were valid. All standards are subject
21、to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most re- cent editions of the standards indicated below. Members of IEC and IS0 maintain registers of cur- rently valid International Standards. IS0 3696:1987, Wa
22、ter for analytical laboratory use - Specification and test methods. IS0 7888:1985, Water quality - Determination of electrical conductivity. c(KCI) = 0,l mol/l. Dissolve 7,456 g of potassium chloride, previously dried for 24 h at 220 “C $I 10 OC in water (4.11, and dilute to 1 O00 m l at 20 O C . Th
23、e specific electrical conductivity of this solution is 1 290 mS/m at 25 “C. 4.3 Potassium chloride solution, c(KCI) = 0,020 O mol/l. Pour 200,O ml of the potassium chloride solution (4.2) into a 1 O00 ml volumetric flask and dilute to volume with water at 20 O C . The specific electrical conductivit
24、y of this solution i s 277 mS/m at 25 O C . 4.4 Potassium chloride solution, c(KCI) = 0,010 O mo IS0 1 1464: 1 994, Soil quality - Pretreatment of sam- ples for physico-chemical analyses. 3 Principle Pour 100,O ml of the potassium chloride solution (4.2) into a 1 O00 ml volumetric flask and dilute t
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