SIST EN 12048:1999

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Feste Düngemittel und Calcium-/Magnesium-Bodenverbesserungsmittel - Bestimmung des Feuchtegehaltes - Gravimetrisches Verfahren durch Trocknung bei (105 +/- 2)°C (ISO 8190:1992 modifiziert)Engrais solides et amendements calciques et/ou magnésiens - Détermination de la teneur en eau - Méthode gravimétrique par séchage a (105 +/- 2)°C (ISO 8190:1992 modifiée)Solid fertilizers and liming materials - Determination of moisture content - Gravimetric method by drying at (105 +/- 2)°C (ISO 8190:1992 modified)65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 12048:1996SIST EN 12048:1999en01-marec-1999SIST EN 12048:1999SLOVENSKI
STANDARD



SIST EN 12048:1999



SIST EN 12048:1999



SIST EN 12048:1999



SIST EN 12048:1999



SIST EN 12048:1999



SIST EN 12048:1999



SIST EN 12048:1999



I N TERN AT1 O NAL STANDARD IS0 8190 First edition 1 992-1 1-01 Solid fertilizers - Determination of moisture content - Gravimetric method by drying at (105 _+ 2) OC Engrais solides - Détermination de la teneur en eau - Méthode par séchage 4 (1 05 k 2) OC Reference number IS0 81 90:1992(E) SIST EN 12048:1999



IS0 8 190: 1992( E) Foreword IS0 (the International Organization for Standardization) 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 represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 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 International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 81 90 was prepared by Technical Committee ISO/TC 134, Fertilizers and soil conditioners, Sub-committee SC 4, Chemical analysis. Annex A of this International Standard is for information only. 8 IS0 1992 All rights resewed. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without per- mission in writing from the publisher. International Organization for Standardization Case Postale 56 CH-1211 Genève 20 Switzerland Printed in Switzerland ii SIST EN 12048:1999



INTERNATIONAL STANDARD IS0 8190:1992(E) Solid fertilizers - Determination of moisture content - Gravimetric method by drying at (105 -L: 2) "C 01 Scope 4 Material This International Standard specifies a gravimetric method, by drying at (105 f 2) OC, for the determi- nation of the moisture content of fertilizers. fertilizers: - superphosphates; - natural phosphates; 4.1 Silica gel desiccant, self-indicating, particle Size Activate the silica gel, immediately prior to use, by transferring the basin to the oven (5.4)' set at 105 OC, for 2 h. Transfer the basin with its contents to a desiccator and allow to cool to ambient tem- perature. mm to mm. The Inethod is applicable to the following phosphatic placing about 100 g in the evaporating basin (5.3) and - ground rock phosphates; 5 Apparatus - partially solubilized rock phosphates. The method is not applicable to ammonium com- Ordinary laboratory apparatus and, in particular, the following. pounds or magnesium sulfates. 2 Normative reference The followinu standard contain provisio 5.1 Weighing bottle, 70 mm to 80 mm diameter, fitted with a stopper. 5.2 Vacuum desiccator, internal diameter about 200 mm, containing silica gel desiccant (4.1). which, through refeknce in this text, constitute provisions of this International Standard. At the time of publi- 5.
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