BS EN 15961-2017 Fertilizers Extraction of water-soluble calcium magnesium sodium and sulfur in the form of sulfates《肥料 以硫酸盐形式存在的水溶性钙、镁、钠和硫磺的提取》.pdf

《BS EN 15961-2017 Fertilizers Extraction of water-soluble calcium magnesium sodium and sulfur in the form of sulfates《肥料 以硫酸盐形式存在的水溶性钙、镁、钠和硫磺的提取》.pdf》由会员分享，可在线阅读，更多相关《BS EN 15961-2017 Fertilizers Extraction of water-soluble calcium magnesium sodium and sulfur in the form of sulfates《肥料 以硫酸盐形式存在的水溶性钙、镁、钠和硫磺的提取》.pdf（10页珍藏版）》请在麦多课文档分享上搜索。

1、BS EN 15961:2017Fertilizers Extractionof water-soluble calcium,magnesium, sodium and sulfurin the form of sulfatesBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 15961:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 15

2、961:2017. It supersedes BS EN 15961:2011 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee CII/37, Fertilisers and related chemicals.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does n

3、ot purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 92807 9 ICS 65.080 Compliance with a British Standard cannot confer immunity from legal ob

4、ligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 15961:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15961 January 2017 ICS 65

5、.080 Supersedes EN 15961:2011English Version Fertilizers - Extraction of water-soluble calcium, magnesium, sodium and sulfur in the form of sulfates Engrais - Extraction des formes solubles dans leau du calcium, du magnsium, du sodium et du soufre sous forme de sulfate Dngemittel - Extraktion von wa

6、sserlslichem Calcium, Magnesium und Natrium sowie von Schwefel in Form von Sulfat This European Standard was approved by CEN on 9 November 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a

7、national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A

8、 version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cypr

9、us, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and Un

10、ited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. E

11、N 15961:2017 EBS EN 15961:2017EN 15961:2017 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Principle . 4 5 Sampling . 4 6 Reagents . 4 7 Apparatus . 5 8 Procedure. 5 8.1 Test portion . 5 8.2 Preparation of the solution . 5 9 Test report . 5

12、 Bibliography 6 BS EN 15961:2017EN 15961:2017 (E) 3 European foreword This document (EN 15961:2017) has been prepared by Technical Committee CEN/TC 260 “Fertilizers and liming materials”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard

13、, either by publication of an identical text or by endorsement, at the latest by July 2017 and conflicting national standards shall be withdrawn at the latest by July 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall

14、 not be held responsible for identifying any or all such patent rights. This document supersedes EN 15961:2011. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. The following changes have been made to the former edition:

15、 a) procedure for the preparation of the solution (8.2) technically revised; b) editorially revised. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,

16、Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey an

17、d the United Kingdom. BS EN 15961:2017EN 15961:2017 (E) 4 1 Scope This European Standard specifies a method for the extraction of water-soluble calcium, magnesium, sodium and sulfur (in the form of sulfates), so that the same extract can be used for the determination of each nutrient required. The m

18、ethod is solely applicable to fertilizers listed in Regulation (EC) 2003/2003, Annex I 2), for which a declaration of the water-soluble calcium, magnesium, sodium, and sulfur (in the form of sulfates) is provided for in this Regulation. 2 Normative references The following documents, in whole or in

19、part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1482-2, Fertilizers and liming materials - S

20、ampling and sample preparation - Part 2: Sample preparation EN 12944-1:1999, Fertilizers and liming materials and soil improvers - Vocabulary - Part 1: General terms EN 12944-2:1999, Fertilizers and liming materials and soil improvers - Vocabulary - Part 2: Terms relating to fertilizers 3 Terms and

21、definitions For the purposes of this document, the terms and definitions given in EN 12944-1:1999 and EN 12944-2:1999 apply. 4 Principle Extraction of the calcium, magnesium, sodium, and sulfur (present in the form of sulfates) in the fertilizer by boiling in water under the specified conditions. 5

22、Sampling Sampling is not part of the method specified in this document. A recommended sampling method is given in EN 1482-1 1. Sample preparation shall be carried out in accordance with EN 1482-2. Grinding of the laboratory sample is recommended for homogeneity reasons. 6 Reagents 6.1 Water, distill

23、ed or demineralized. BS EN 15961:2017EN 15961:2017 (E) 5 7 Apparatus 7.1 Standard laboratory equipment. 7.2 Electric hot plate, with adjustable temperature. 7.3 Beaker, capacity 600 ml. 7.4 Graduated flask, capacity 500 ml. 7.5 Dry filter. 8 Procedure 8.1 Test portion Where fertilizers contain no su

24、lfur or where they contain, at the same time, no more than 3 % of sulfur (S) i.e. 7,5 % SO3, and no more than 4 % of calcium (Ca) i.e. 5,6 % CaO, weigh 5 g of the test sample to the nearest 1 mg. Place it in the beaker (7.3). Where fertilizers contain more than 3 % of sulfur (S) and more than 4 % of

25、 calcium (Ca), weigh 1 g of the test sample to the nearest 1 mg. Place it in the beaker (7.3). 8.2 Preparation of the solution Add approximately 400 ml of water (6.1) to the test portion (8.1) and boil for 30 min. Cover the beaker with a lid to avoid losses during boiling. Allow to cool and let stan

26、d for 24 h at room temperature. Decant quantitatively into a graduated flask (7.4). Make up to volume with water (6.1) and mix. Pass through a filter (7.5) into a dry container. Discard the initial portions of the filtrate. The filtrate shall be completely transparent. Stopper if the filtrate is not

27、 used immediately. 9 Test report The test report shall contain at least the following information: a) all information necessary for the complete identification of the sample; b) test method used with reference to this document; c) test results obtained; d) date of sampling and sampling procedure (if

28、 known); e) date when the analysis was finished; f) whether the requirement of the repeatability limit has been fulfilled; g) all operating details not specified in this document, or regarded as optional, together with details of any incidents occurred when performing the method, which might have in

29、fluenced the test result(s). BS EN 15961:2017EN 15961:2017 (E) 6 Bibliography 1 EN 1482-1, Fertilizers and liming materials - Sampling and sample preparation - Part 1: Sampling 2 Regulation (EC) No 2003/2003 of the European Parliament and of the Council of 13 October 2003 relating to fertilisers, Of

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