EN 1236:1995

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.PRGLILFLUDQDüngemittel - Bestimmung der Schüttdichte (ISO 3944:1992 modifiziert)Engrais - Détermination de la masse volumique sans tassement (ISO 3944:1992 modifiée)Fertilizers - Determination of bulk density (loose) (ISO 3944:1992 modified)65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 1236:1995SIST EN 1236:1998en01-maj-1998SIST EN 1236:1998SLOVENSKI
STANDARD
INTERNATIONAL STANDARD Third edi tion 1992-07-01 -_~--_-_--- ---- ~--~- _-_~_---.~-------~~- Fertilizers - Determination of bulk density (loose) - Engr-ais I_ D6terminatior~ de la masse volumique sans tassemenf --.--- _---.--_----- --_p--- w----m.- --__ _1_1_-- ~- ---- -- Reference number -- .--. ----_----. _ -_ _. ~. ISO 3944: 1992(E) SIST EN 1236:1998

ISO 3944:1992(E) Fo rew ‘ord ISO (the international Organization for Standardization) is a worldwide federation of national Standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Esch member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 3944 was prepared by Technical Committee ISO/TC 134, Fertilizer-s and seil conditioners, Sub-Committee SC 3, Physicai properfies. This third edition cancels and replaces the second edition (ISO 3944:1980), which has been technically revised. 0 ISO 1992 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronie or mechanical, including photocopying and microfilm, witbout Permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii SIST EN 1236:1998

ISO 3944:1992(E) Introduction The bulk densities (loose and tapped) of a fertilizer provide information relative to the required size of packaging materials, store-houses, stock-rooms, etc. Generally, the bulk density (tapped) is up to 10 % greater than the bulk density (loose), and sometimes it may exceed this value. Both bulk densities depend on the actual density, surface form and particle size of the fertilizers. The bulk density (loose) tan be used to calculate the maximum volume of a given weight of fevtilizer which may be expected in practice. The actual volume occupied by a given weight of fertilizer will normally be within the range calculated from the bulk density (loose) and the bulk density (tapped). . . . Ill SIST EN 1236:1998

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INTERNATIONAL STANDARD ISO 3944:1992(E) Fertilizers - Determination of bulk density (loose) 1 Scope This International Standard specifies a method for the determination of the bulk density (loose) of solid fertilizers, except powder fertilizers. The method is applicable to dry fertilizers only. If the fertilizer has absorbed moisture during transpor-t or storage, it is necessary to dry it in an environmental chamber, with constant low humidity, Prior to the determination. The method is not suitable for materials which con- tain a large proportion of particles e
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