EN 16962:2018
(Main)Fertilizers - Extraction of water soluble micro-nutrients in fertilizers and removal of organic compounds from fertilizer extracts
Fertilizers - Extraction of water soluble micro-nutrients in fertilizers and removal of organic compounds from fertilizer extracts
This European Standard specifies a method for the extraction of water soluble forms of boron, cobalt, copper, iron, manganese, molybdenum and zinc from mineral fertilizers containing one or more micro-nutrients and the procedure for removal of organic compounds from the water extracts.
The extracts can be analysed according to EN 16963, EN 16965, prEN 17041, prEN 17042, prEN 17043 and CEN/TS 17060.
Düngemittel - Extraktion wasserlöslicher Spurennährstoffe aus Düngemitteln und Beseitigung organischer Verbindungen aus Düngemittelextrakten
Diese Europäische Norm legt ein Verfahren zur Extraktion wasserlöslicher Formen von Bor, Cobalt, Kupfer, Eisen, Mangan, Molybdän und Zink aus mineralischen Düngemitteln, die einen oder mehrere Spurennährstoffe enthalten, und das Verfahren zur Beseitigung organischer Verbindungen aus den Wasser¬extrakten fest.
Die Extrakte können nach EN 16963, EN 16965, prEN 17041, prEN 17042, prEN 17043 und nach CEN/TS 17060 analysiert werden.
Engrais - Extraction des oligo-éléments soluble dans l'eau des engrais et élimination des composés organiques dans les extraits d'engrais
La présente norme européenne spécifie la méthode pour l’extraction des formes solubles dans l’eau du bore, du cobalt, du cuivre, du fer, du manganèse, du molybdène et du zinc à partir d’engrais minéraux contenant un ou plusieurs oligo-éléments et le mode opératoire d’élimination des composés organiques dans les extraits aqueux.
Les extraits peuvent être analysés conformément aux EN 16963, EN 16965, prEN 17041, prEN 17042, prEN 17043 et CEN/TS 17060.
Gnojila - Ekstrakcija v vodi topnih mikrohranil iz gnojil in odstranitev organskih spojin iz ekstraktov gnojil
Ta evropski standard določa postopek za ekstrakcijo v vodi topnih oblik bora, kobalta, bakra, železa, mangana, molibdena in cinka iz mineralnih gnojil, ki vsebujejo eno ali več mikrohranil, ter postopek za odstranjevanje organskih zmesi iz ekstraktov vode.
Ekstrakti se lahko analizirajo skladno s standardi WI 00260173, prEN 16963, prEN 16965, WI 00260179, WI 00260180 in WI 00260182.
General Information
- Status
- Published
- Publication Date
- 23-Jan-2018
- Withdrawal Date
- 30-Jul-2018
- Technical Committee
- CEN/TC 260 - Fertilizers and liming materials
- Drafting Committee
- CEN/TC 260/WG 7 - Chemical analysis
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 03-Nov-2023
- Completion Date
- 14-Apr-2025
Overview
EN 16962:2018 (CEN) specifies a standardized laboratory method for the extraction of water‑soluble micro‑nutrients (boron, cobalt, copper, iron, manganese, molybdenum and zinc) from mineral fertilizers and for the removal of organic compounds from those water extracts. The method covers procedures for fertilizers with micro‑nutrient contents both ≤ 10 % and > 10 %, and defines preparation, extraction, acidification and optional organic‑matter removal steps so extracts can be reliably analysed by ICP‑AES, FAAS or spectrophotometric/gravi metric methods.
Key topics and requirements
- Scope: Extraction of water‑soluble forms of B, Co, Cu, Fe, Mn, Mo, Zn and removal of organic matter when required.
- Extraction principle: Shake fertilizer in water at (20 ± 2) °C for 60 minutes; adjust shaking intensity to prevent settling.
- Sample sizes and water ratios:
- For micro‑nutrient content ≤ 10 %: 5.00 g sample + 250 ml water.
- For micro‑nutrient content > 10 %: 2.00 g sample + 500 ml water.
- Acidification: After extraction, acidify extracts to a final 0.5 mol/L nitric acid concentration (or HCl 0.5 mol/L where specified, e.g., some molybdenum determinations or if Fe precipitation occurs).
- Removal of organic compounds (optional): Oxidize with hydrogen peroxide, allow reaction at room temperature, then boil to completion; re‑acidify and dilute as specified before analysis.
- Materials and apparatus: Use plastic or silica ware (avoid borosilicate glass for boron determinations), ash‑free filter paper or centrifugation, controlled shaker and hotplate.
- Storage: Acidified extracts can be stored in tightly closed plastic vessels for up to 15 days.
- Quality/precision: Precision assessed in inter‑laboratory studies; measurement precision data published in EN 16963 (ICP‑AES) and EN 16965 (FAAS).
- Safety & competence: Tests require trained laboratory staff and standard laboratory safety practices.
Applications and users
This standard is practical for:
- Fertilizer manufacturers and QC laboratories performing routine micro‑nutrient release testing.
- Accredited testing labs preparing extracts for ICP‑AES, FAAS or spectrophotometric analysis.
- Regulatory bodies and conformity assessment organizations verifying compliance with fertilizer regulations.
- Agronomy laboratories and R&D groups evaluating water‑soluble micro‑nutrient availability.
EN 16962 ensures consistent extraction and sample preparation so analytical results (e.g., water‑soluble nutrient content) are comparable across laboratories and suitable for regulatory, quality control and research purposes.
Related standards
Relevant standards referenced for analysis and sampling:
- EN 16963 - Determination using ICP‑AES
- EN 16965 - Determination using FAAS
- prEN 17041 / prEN 17042 / prEN 17043 - Boron & Molybdenum spectrophotometric/acidimetric methods
- CEN/TS 17060 - Molybdenum gravimetric determination
- EN ISO 3696 - Water for analytical laboratory use
- EN 1482‑1 / EN 1482‑2 - Sampling and sample preparation
Keywords: EN 16962:2018, fertilizers, water soluble micro‑nutrients, extraction method, removal of organic compounds, ICP‑AES, FAAS, boron, molybdenum, CEN.
Frequently Asked Questions
EN 16962:2018 is a standard published by the European Committee for Standardization (CEN). Its full title is "Fertilizers - Extraction of water soluble micro-nutrients in fertilizers and removal of organic compounds from fertilizer extracts". This standard covers: This European Standard specifies a method for the extraction of water soluble forms of boron, cobalt, copper, iron, manganese, molybdenum and zinc from mineral fertilizers containing one or more micro-nutrients and the procedure for removal of organic compounds from the water extracts. The extracts can be analysed according to EN 16963, EN 16965, prEN 17041, prEN 17042, prEN 17043 and CEN/TS 17060.
This European Standard specifies a method for the extraction of water soluble forms of boron, cobalt, copper, iron, manganese, molybdenum and zinc from mineral fertilizers containing one or more micro-nutrients and the procedure for removal of organic compounds from the water extracts. The extracts can be analysed according to EN 16963, EN 16965, prEN 17041, prEN 17042, prEN 17043 and CEN/TS 17060.
EN 16962:2018 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.
EN 16962:2018 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.
EN 16962:2018 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 topnih mikrohranil iz gnojil in odstranitev organskih spojin iz ekstraktov gnojilDüngemittel - Extraktion wasserlöslicher Spurennährstoffe aus Düngemitteln und Beseitigung organischer Verbindungen aus DüngemittelextraktenEngrais - Extraction des oligo-éléments soluble dans l'eau des engrais et élimination des composés organiques dans les extraits d'engraisFertilizers - Extraction of water soluble micro-nutrients in fertilizers and removal of organic compounds from fertilizer extracts65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 16962:2018SIST EN 16962:2018en,fr,de01-junij-2018SIST EN 16962:2018SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16962
January
t r s z ICS
x wä r z r English Version
Fertilizers æ Extraction of water soluble microænutrients in fertilizers and removal of organic compounds from fertilizer extracts Engrais æ Extraction des oligoæéléments soluble dans l 5eau des engrais et élimination des composés organiques dans les extraits d 5engrais
Düngemittel æ Extraktion wasserlöslicher Spurennährstoffe aus Düngemitteln und Beseitigung organischer Verbindungen aus DüngemittelextraktenThis European Standard was approved by CEN on
s w October
t r s yä
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:
Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s x { x tã t r s z ESIST EN 16962:2018
10 % . 6 8.1.2 Micro-nutrient content > 10 % . 6 8.2 Extraction . 7 8.3 Removal of organic compounds . 7 9 Precision . 8 10 Test report . 8 Bibliography . 9
10 % as well as of > 10 %. Removal of organic compounds is not usually necessary if FAAS or ICP-AES method of determination is used. It is applied only in some cases for determination of boron and molybdenum by spectrophotometric methods, determination of boron by acidimetric titration and gravimetric determination of molybdenum. The method for removal of organic compounds is a part of this standard. WARNING — Persons using this European Standard should be familiar with normal laboratory practice. This European Standard does not purport to address all of the safety issues, if any, associated with its use. It is the responsibility of the user to establish appropriate health and safety practices and to ensure compliance with any national regulatory conditions. IMPORTANT — It is absolutely essential that tests conducted according to this European Standard are carried out by suitably trained staff. SIST EN 16962:2018
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