1、March 2017 English price group 6No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 65.080!%bo.“2637611www.din.deDIN EN
2、 15961Fertilizers Extraction of watersoluble calcium, magnesium, sodium and sulfur in the form of sulfates;English version EN 15961:2017,English translation of DIN EN 15961:2017-03Dngemittel Extraktion von wasserlslichem Calcium, Magnesium und Natrium sowie von Schwefel in Form von Sulfat;Englische
3、Fassung EN 15961:2017,Englische bersetzung von DIN EN 15961:2017-03Engrais Extraction des formes solubles dans leau du calcium, du magnsium, du sodium et du soufre sous forme de sulfate;Version anglaise EN 15961:2017,Traduction anglaise de DIN EN 15961:2017-03SupersedesDIN EN 15961:201202www.beuth.d
4、eDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.Document comprises 8 pages 02.17 2 A comma is used as the decimal marker. National foreword This document (EN 15961:2017) has been prepared by Technical Committee CEN/TC 260 “Fertiliz
5、ers and liming materials” (Secretariat: DIN, Germany) The responsible German body involved in its preparation was DIN-Normenausschuss Lebensmittel und landwirtschaftliche Produkte (DIN Standards Committee Food and Agricultural Products), Working Committee NA 057-03-02 AA Dngemittel. Amendments This
6、standard differs from DIN EN 15961:2012-02 as follows: a) the procedure for the preparation of the solution (8.2) has been technically revised; b) the standard has been editorially revised. Previous editions DIN SPEC 1174 (DIN CEN/TS 15961): 2010-03 DIN EN 15961: 2012-02 DIN EN 15961:2017-03EUROPEAN
7、 STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15961 January 2017 ICS 65.080 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 so
8、dium et du soufre sous forme de sulfate Dngemittel - Extraktion von wasserlslichem 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 stipu
9、late the conditions for giving this European Standard the status of a 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 S
10、tandard exists in three official versions (English, French, German). A 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
11、national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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,
12、 Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United 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 an
13、d by any means reserved worldwide for CEN national Members. Ref. No. EN 15961:2017 EEN 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
14、 8.2 Preparation of the solution . 5 9 Test report . 5 Bibliography 6 DIN EN 15961:2017-03EN 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
15、 Standard shall be given the status of a national standard, 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 th
16、is document may be the subject of patent rights. CEN shall 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. T
17、he following changes have been made to the former edition: 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 thi
18、s European Standard: Austria, Belgium, Bulgaria, Croatia, 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,
19、 Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 15961:2017-03EN 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
20、be used for the determination of each nutrient required. The method 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
21、 Normative references The following documents, in whole or in 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 amendm
22、ents) applies. EN 1482-2, Fertilizers and liming materials - Sampling 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 - V
23、ocabulary - Part 2: Terms relating to fertilizers 3 Terms and 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 fer
24、tilizer by boiling in water under the specified conditions. 5 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 reco
25、mmended for homogeneity reasons. 6 Reagents 6.1 Water, distilled or demineralized. DIN EN 15961:2017-03EN 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 fi
26、lter. 8 Procedure 8.1 Test portion Where fertilizers contain no sulfur 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 fe
27、rtilizers contain more than 3 % of sulfur (S) and more than 4 % of 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 wit
28、h a lid to avoid losses during boiling. Allow to cool and let stand 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 filtra
29、te shall be completely transparent. Stopper if the filtrate is not 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) tes
30、t results obtained; d) date of sampling and sampling procedure (if 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
31、incidents occurred when performing the method, which might have influenced the test result(s). DIN EN 15961:2017-03EN 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, Official Journal L 304, 21.11.2003, p. 1-194, Annex I and Annex IV, Method 8.3 DIN EN 15961:2017-03
