AnsT Intarret Poc sect OSI 5313 International Standard High nitrogen content, straight ammonium nitrate fertilizers - Determination of oil retention Engrais simples a base de nitrate d'ammonium et a forte teneur en azote - Détermination de la rétention d'huile First edition - 1986-05-01 UDC 631.842.4 : 620.1 : 539.217 Ref. No. ISO 5313-1986 (E) 1SO 5313-1986 (E) Descriptors : fertilizers, ammonium nitrate, tests, physical tests, porosity measurement, physical properties, porosity, test equipment. Price based on 2 pages Copyright International Organization for Standardization Not for Resale Foreword 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. 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, govern- mentat and non-governmental, in liaison with Iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISso Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 5313 was prepared by Technical Committee ISO/TC 134, Fertilizers and soil conditioners. Users shouid note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its fatest edition, unless otherwise stated. @International Organization.for Standardization, 1986 Printed in Switzerland Copyright International Organization for Standardization ISO 5313-1986 (E) INTERNATIONAL STANDARD High nitrogen content, straight ammonium nitrate fertilizers - Determination of oil retention Introduction 5 Reagent The porosity of a high nitrogen content, straight ammonium Gas oil nitrate fertilizer can be measured by means of the determination of the gas oil retention, cailed by convention oil retention. Viscosity: 1,3 to 5,0 mPa·s (1,6 to 6,0 cSt) at 40 oC The method specified in this International Standard is an em- Density: 0,82 to 0,86 g/ml at 15 oC pirical method, requiring the minimum of apparatus, and gives resuits with an acceptable level of reproducibility. Sulfur content < 1,0 % (m/m) Ash < 0,1 % (m/m) 1 Scope and field of application The density of the gas oil shall be mentioned in the test report. This International Standard specifies a method for the deter- mination of the gas oil retention of solid, high nitrogen content, Apparatus straight ammonium nitrate fertilizers. Ordinary laboratory apparatus, and The method is applicable to fertilizers which do not contain materials soluble in gas oil and which are prilled or granular. 6.1 Balance, capable of weighing to the nearest 0,01 g. 2 References 6.2 Beaker, of capacity 500 ml. Technical requirements and testing IS03310/1,Test sieves- 6.3 Funnel, of plastics material, preferably with a cylindrical Part 1: Test sieves of metal wire cloth. wall at the upper end, diameter approximately 200 mm. Iso 8358, Fertilizers -- Preparation of samples for analysis. 1) 6.4 Test sieve, complying with ISO 3310/1, aperture size 0,5 mm, fitting into the funnel (6.3). 3 Definition 6.5 Filter paper, rapid filtering grade, creped, soft, of sur- face density 150 g/m². oil retention of a high nitrogen content, straight am monium nitrate fertilizer: The quantity of gas oil retained by the fertilizer determined under the conditions specified. 7 Preparation of test sample It is expressed as a percentage by mass. Prepare the test sample in accordance with ISO 8358. 4 Principle 8 .Procedure period, followed by the draining away and the removal of 8.1 Sieve the test sample using the test sieve (6.4) to remove surpl