ISO INTERNATIONAL STANDARD 10249 First edition 1996-12-15 Fluid fertilizers - Preliminary visual examination and preparation of samples for physical testing Engrais liquides - Examen visuel preliminaire et preparation des échantillonspouressais physiques OSI Reference number ISO10249:1996(E) ISO 10249:1996(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO liaison with IsO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission(lEC)onallmattersofelectrotechnicalstandardization. Draft International Standards 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 ISO 10249 was prepared by Technical Committee ISO/TC 134, Fertilizers and soil conditioners, Subcommittee SC 3, Physical properties. Annex A of this International Standard is for information only. @ISO1996 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utlized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International OrganizationforStandardization Casepostale56·CH-1211Geneve20.Switzerland Internet [email protected] X.400 C=ch; a=400net; p=iso; 0=isocs; S=central Printed in Switzerland ii ISO 10249:1996(E) INTERNATIONALSTANDARD ISO Fluid fertilizers -- Preliminary visual examination and preparation of samples for physical testing 1 Scope This International Standard specifies both a procedure for preliminary examination of a single sample as received for testing, and a procedure for preparing a test sample by blending and reduction of a series of samples representative of a consignment or a bulk delivery of fluid fertilizer. NOTE - This complements the corresponding standard for solid fertilizers (ISO 8358). 2 Requirements 2.1 General after sampling because of their sensitivity to both time and temperature. 2.2 Condition of container contents have been affected, the sample shall be rejected. 2.3 Opening of container All packing materials (e.g. sawdust) and other debris shall be removed from the outer surface of the container, 3 Procedure 3.1 Procedures for solutions 3.1.1 Visual examination 3.1.1.1 Ullage Record the approximate ullage (i.e. the air-space in the container above the contents of the container), expressed 3.1.1.2 Surface 3.1.1.3 Separation of phases 3.1.1.4 Clarity Record the clarity, colour and temperature of the sample