BS-5551-3.4-1987 ISO-5313-1986.pdf
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1、BRITISH STANDARD BS 5551-3.4: 1987 ISO 5313:1986 Fertilizers Part 3: Physical properties Section 3.4 Method for determination of oil retention of high nitrogen content, straight ammonium nitrate fertilizers ISO title: High nitrogen content, straight ammonium nitrate fertilizers Determination of oil
2、retention UDC 631.8:53.08 + 631.842.4:665.1 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 14:30:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5551-3.4:1987 This British Standard, having been prepared under the direction of the Chemicals Standards Committee, was published under the author
3、ity of the Board of BSI and comes into effect on 30 November 1987 BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference CIC/37 Draft for comment 84/52752 DC ISBN 0 580 15822 5 Committees responsible for this British Standard The preparation of this British
4、 Standard was entrusted by the Chemicals Standards Committee (CIC/-) to Technical Committee CIC/37, upon which the following bodies were represented: Association of Public Analysts Department of Trade and Industry (Laboratory of the Government Chemist) Fertiliser Manufacturers Association Ltd. Insti
5、tute of Trading Standards Administration Ministry of Agriculture, Fisheries and Food The following body was also represented in the drafting of the standard, through sub-committees and panels: British Society of Rheology Amendments issued since publication Amd. No.Date of issueComments Licensed Copy
6、: sheffieldun sheffieldun, na, Mon Dec 04 14:30:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5551-3.4:1987 BSI 10-1999i Contents Page Committees responsibleInside front cover National forewordii 0Introduction1 1Scope and field of application1 2References1 3Definition1 4Principle1 5Reagent1 6Appa
7、ratus1 7Preparation of test sample1 8Procedure1 9Expression of results2 10Test report2 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 14:30:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5551-3.4:1987 ii BSI 10-1999 National foreword This Section o
8、f BS 5551 has been prepared under the direction of the Chemicals Standards Committee. For some years the United Kingdom has participated in the standardization of methods for determining physical properties of fertilizers through Subcommittee 3, Physical properties, of Technical Committee 134, Ferti
9、lizers and soil conditioners, of the International Organization for Standardization (ISO). As international agreement is reached on the methods, it is proposed to publish them as Sections of BS 5551. The standard is published in four Parts, each Part being subdivided into Sections and, where appropr
10、iate, subsections. The four Parts are: Part 1: Terminology and labelling; Part 2: Sampling; Part 3: Physical properties; Part 4: Chemical analysis. This Section of Part 3 is identical with ISO 5313:1986 “High nitrogen content, straight ammonium nitrate fertilizers Determination of oil retention”. Te
11、rminology and conventions. The text of the International Standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. Th
12、e comma has been used as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. The symbol “ml” has been used to denote millilitre. In British Standards it is current practice to use the symbol “mL”. In British Standards it is current
13、 practice to use the spelling “sulphur”, etc., instead of “sulfur”, etc. Wherever the words “International Standard” appear, referring to this standard, they should be read as “British Standard”. Cross references. With reference to the test sieve complying with ISO 3310-1:1982 specified in 6.4, a te
14、st sieve of aperture size 500 4m complying with BS 410:1986 “Specification for test sieves” is suitable. ISO 8358 is in preparation. Until it is available, guidance on sampling and sample preparation can be found in BS 5309 “Methods for sampling chemical products”, Part 1 “Introduction and general p
15、rinciples”, and BS 5309-4 “Sampling of solids”. Additional information. This British Standard describes a method of test only and should not be used as a specification defining physical characteristics. Reference to the standard should indicate that the method of test used is in accordance with BS 5
16、551-3.4. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document c
17、omprises a front cover, an inside front cover, pages i and ii, pages 1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: s
18、heffieldun sheffieldun, na, Mon Dec 04 14:30:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5551-3.4:1987 BSI 10-19991 0 Introduction The porosity of a high nitrogen content, straight ammonium nitrate fertilizer can be measured by means of the determination of the gas oil retention, called by conv
19、ention oil retention. The method specified in this International Standard is an empirical method, requiring the minimum of apparatus, and gives results with an acceptable level of reproducibility. 1 Scope and field of application This International Standard specifies a method for the determination o
20、f the gas oil retention of solid, high nitrogen content, straight ammonium nitrate fertilizers. The method is applicable to fertilizers which do not contain materials soluble in gas oil and which are prilled or granular. 2 References ISO 3310-1, Test sieves Technical requirements and testing Part 1:
21、 Test sieves of metal wire cloth. ISO 8358, Fertilizers Preparation of samples for analysis1). 3 Definition oil retention of a high nitrogen content, straight ammonium nitrate fertilizer the quantity of gas oil retained by the fertilizer determined under the conditions specified it is expressed as a
22、 percentage by mass 4 Principle Total immersion of a test portion in gas oil for a specified period, followed by the draining away and the removal of surplus gas oil under specified conditions. Measurement of the increase in mass of the test portion. 5 Reagent Gas oil Viscosity: 1,3 to 5,0 mPas (1,6
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