SIST EN 15961:2017
(Main)Fertilizers - Extraction of water-soluble calcium, magnesium, sodium and sulfur in the form of sulfates
Fertilizers - Extraction of water-soluble calcium, magnesium, sodium and sulfur in the form of sulfates
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 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.
Düngemittel - Extraktion von wasserlöslichem Calcium, Magnesium und Natrium sowie von Schwefel in Form von Sulfat
Diese Europäische Norm legt ein Verfahren zur Extraktion von wasserlöslichem Calcium, Magnesium, Natrium und Schwefel (in Form von Sulfat) fest, so dass derselbe Extrakt für die Bestimmung jedes erforderlichen Nährstoffes verwendet werden kann.
Das Verfahren gilt ausschließlich für in der Verordnung (EG) 2003/2003, Anhang I [2] aufgeführte Düngemittel, für die die Angabe des wasserlöslichen Calciums, Magnesiums, Natriums und Schwefels (in Form von Sulfat) vorgeschrieben ist.
Engrais - Extraction des formes solubles dans l'eau du calcium, du magnésium, du sodium et du soufre sous forme de sulfate
Le présent document (prEN 15961:2016) a été élaboré par le Comité Technique CEN/TC 260 "Engrais et amendements minéraux basiques", dont le secrétariat est tenu par DIN.
Ce document est actuellement soumis à l’Enquête CEN.
Le présent document est destiné à remplacer l’EN 15961:2011.
Le présent document a été élaboré dans le cadre d'un mandat donné au CEN par la Commission Européenne et l'Association Européenne de Libre Echange.
Les modifications suivantes ont été apportées à l'édition précédente :
a) révision technique de la procédure pour la préparation de la solution (8.2),
b) rédaction révisée.
Gnojila - Ekstrakcija v vodi topnega kalcija, magnezija in natrija ter žvepla v obliki sulfata
Ta evropski standard določa metodo za ekstrakcijo v vodi topnega kalcija, magnezija, natrija in žvepla (v obliki sulfatov), pri kateri se lahko isti izvleček uporabi za določevanje vseh zahtevanih hranil.
Metoda se uporablja izključno za gnojila, navedena v dodatku I Uredbe (ES) 2003/2003 [2], za katera je v tej uredbi predvidena deklaracija v vodi topnega kalcija, magnezija, natrija in žvepla (v obliki sulfatov).
General Information
- Status
- Published
- Public Enquiry End Date
- 01-Aug-2016
- Publication Date
- 07-Nov-2017
- Technical Committee
- KAT - Soil quality
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 15-Sep-2017
- Due Date
- 20-Nov-2017
- Completion Date
- 08-Nov-2017
Relations
- Effective Date
- 01-Dec-2017
- Effective Date
- 01-Feb-2026
Overview
EN 15961:2017 (CEN) specifies a standardized extraction method for the determination of water-soluble calcium (Ca), magnesium (Mg), sodium (Na) and sulfur (S) in the form of sulfates from fertilizers listed in Regulation (EC) No 2003/2003 (Annex I). The procedure yields a single aqueous extract that can be used for subsequent analyses of each nutrient, improving laboratory efficiency and result comparability across EU member states.
Key practical points from the standard:
- Extraction by boiling in distilled or demineralized water.
- Use of a covered beaker to avoid losses during boiling.
- Cooling and standing period prior to decanting and filtration.
Key Topics
- Scope and applicability: Method applicable only to fertilizers for which declarations of water-soluble Ca, Mg, Na and sulfate-S are required under Regulation (EC) 2003/2003, Annex I.
- Principle: Nutrients are extracted by boiling the fertilizer sample in water under the specified conditions so one extract can serve multiple determinations.
- Sample mass rules:
- If fertilizer contains no S or contains ≤ 3 % S (i.e., ≤ 7.5 % SO3) and ≤ 4 % Ca (i.e., ≤ 5.6 % CaO): use 5 g test portion.
- If fertilizer contains > 3 % S and > 4 % Ca: use 1 g test portion.
- Extraction procedure (high level):
- Add ~400 ml distilled/demin water to the test portion in a 600 ml beaker.
- Boil for 30 minutes with a lid to minimize losses.
- Allow to cool and stand for 24 hours at room temperature.
- Decant into a 500 ml graduated flask, make up to volume, mix and filter.
- Discard initial filtrate fractions; final filtrate must be transparent and stored stoppered if not analysed immediately.
- Required equipment: standard laboratory apparatus including electric hot plate, 600 ml beaker, 500 ml graduated flask and dry filter.
Applications
This extraction method is designed for laboratories testing EU-listed fertilizers where declarations of water-soluble Ca, Mg, Na and sulfate-S are required. Benefits and uses include:
- Enables a single extract for multiple nutrient determinations, reducing sample handling and reagent use.
- Improves consistency and comparability of results across testing labs and national standards bodies.
- Supports regulatory compliance with Regulation (EC) No 2003/2003 for fertilizer labelling and composition.
Related Standards
- EN 1482-1: Fertilizers and liming materials - Sampling and sample preparation - Part 1: Sampling (recommended sampling method).
- EN 1482-2: Sample preparation for laboratory testing.
- EN 12944-1 and EN 12944-2: Vocabulary for fertilizers and liming materials (terms and definitions referenced).
Additional notes:
EN 15961:2017 supersedes EN 15961:2011 and was prepared by CEN/TC 260. The revised edition includes technical updates to the solution preparation procedure (clause 8.2) and editorial revisions. Laboratories should report all required test report items specified in the standard, including sample identification, method reference, results, dates, repeatability information and any deviations or incidents.
Frequently Asked Questions
SIST EN 15961:2017 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Fertilizers - Extraction of water-soluble calcium, magnesium, sodium and sulfur in the form of sulfates". This standard covers: 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 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.
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 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.
SIST EN 15961:2017 is classified under the following ICS (International Classification for Standards) categories: 65.080 - Fertilizers. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 15961:2017 has the following relationships with other standards: It is inter standard links to SIST EN 15961:2012, oSIST prEN 15961:2026. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 15961:2017 is associated with the following European legislation: EU Directives/Regulations: 2003/2003, 2019/1009; Standardization Mandates: M/335. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN 15961:2017 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Gnojila - Ekstrakcija v vodi topnega kalcija, magnezija in natrija ter žvepla v obliki sulfataDüngemittel - Extraktion von wasserlöslichem Calcium, Magnesium und Natrium sowie von Schwefel in Form von SulfatEngrais - Extraction des formes solubles dans l'eau du calcium, du magnésium, du sodium et du soufre sous forme de sulfateFertilizers - Extraction of water-soluble calcium, magnesium, sodium and sulfur in the form of sulfates65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 15961:2017SIST EN 15961:2017en,fr,de01-december-2017SIST EN 15961:2017SLOVENSKI
STANDARDSIST EN 15961:20121DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15961
January
t r s y ICS
x wä r z r Supersedes EN
s w { x sã t r s sEnglish Version
Fertilizers æ Extraction of wateræsoluble calciumá magnesiumá sodium and sulfur in the form of sulfates Engrais æ Extraction des formes solubles dans l 5eau du calciumá du magnésiumá du sodium et du soufre sous forme de sulfate
Düngemittel æ Extraktion von wasserlöslichem Calciumá Magnesium und Natrium sowie von Schwefel in Form von Sulfat This European Standard was approved by CEN on
{ November
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s w { x sã t r s y ESIST EN 15961:2017
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...