CEN/TS 17782:2022
(Main)Fertilizing products - Determination of the stability of fertilizing products containing micronutrient chelates at different pHs
Fertilizing products - Determination of the stability of fertilizing products containing micronutrient chelates at different pHs
This document specifies a method for the determination of the soluble metal that remains in solution at different pHs after the application of a solution of the fertilizer substance containing micronutrient chelates in a tap water solution used as a reference.
The method applies to fertilizing products containing chelated micronutrients.
Düngeprodukte - Bestimmung der Stabilität von Spurennährstoffchelaten in Düngeprodukten bei verschiedenen pH Werten
Dieses Dokument legt ein Verfahren zur Bestimmung des löslichen Metalls fest, das nach der Anwendung einer Düngemittellösung, die Spurennährstoffchelate enthält, bei verschiedenen pH Werten in einer als Referenz verwendeten Leitungswasserlösung in Lösung bleibt.
Das Verfahren ist bei Düngeprodukten anwendbar, die chelatisierte Spurennährstoffe enthalten.
Fertilisants - Détermination de la stabilité des fertilisants contenant des oligo-éléments chélatés à différents pH
Le présent document spécifie une méthode pour la détermination, à différents pH, des métaux solubles qui restent en solution après l’ajout d’une solution de substance fertilisante contenant des oligo-éléments chélatés dans une eau du robinet de référence.
La méthode s’applique aux fertilisants contenant des oligo-éléments chélatés.
Sredstva za gnojenje - Določanje stabilnosti sredstev za gnojenje, ki vsebujejo kelate mikrohranil pri različnih pH-vrednostih
Ta dokument določa metodo za določanje topne kovine, ki ostane v raztopini pri različnih pH-vrednostih po nanosu raztopine gnojilne snovi, ki vsebuje kelate mikrohranil, v raztopini vode iz pipe, ki se uporablja kot referenca.
Metoda se uporablja za sredstva za gnojenje, ki vsebujejo kelatirana mikrohranila.
General Information
- Status
- Published
- Publication Date
- 05-Apr-2022
- Technical Committee
- CEN/TC 260 - Fertilizers and liming materials
- Drafting Committee
- CEN/TC 260/WG 5 - Determination of chelating agents
- Current Stage
- 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
- Start Date
- 02-Dec-2025
- Completion Date
- 02-Dec-2025
Overview
CEN/TS 17782:2022 is a European Technical Specification developed by the European Committee for Standardization (CEN) that specifies a method for determining the stability of fertilizing products containing micronutrient chelates at different pH levels. This standardized test method is crucial for assessing the soluble metal content remaining in solution after interaction with a reference tap water solution mimicking real agricultural conditions. The specification targets fertilizers that contain chelated micronutrients such as iron (Fe), manganese (Mn), cobalt (Co), copper (Cu), and zinc (Zn).
Adopted for provisional application in 2022, this standard supports the agricultural industry's need to ensure micronutrient availability and product stability under varying soil pH environments. It aligns with the European Union’s regulations for fertilizing products and helps manufacturers demonstrate long-term micronutrient stability, improving product reliability and performance.
Key Topics
- Micronutrient Chelate Stability: Defines "ChSt" as the percentage of soluble micronutrient chelate remaining in reference tap water after three days at specific pH values.
- Test Principle: Samples of fertilizing products are dissolved and exposed to reference tap water buffered at different pHs. Post incubation, soluble metal content is measured using atomic absorption spectrometry (AAS) or inductively coupled plasma emission spectrometry (ICP).
- Reference Tap Water Composition: A buffered reference tap water simulates medium hardness water, containing calcium and magnesium ions to replicate interaction complexity.
- Reagents and Apparatus: The method requires carefully prepared reagents, including potassium hydroxide and nitric acid solutions, and precise equipment such as pH meters, thermostatic baths, and filtration units.
- Sample Preparation and Analysis: Procedures specify accurately weighing fertilizer samples, preparing solutions at designated pHs, filtration after three days’ incubation, and spectrometric determination of metal concentration.
- Calculation of Stability: Stability is quantified by comparing the soluble metal remaining with the initial chelated metal content, expressed as a percentage to indicate the product’s performance under test conditions.
- Interferences Consideration: Identification of possible interfering substances that could affect stability measurement, including other chelating or complexing agents not declared in the product.
Applications
- Agricultural Fertilizer Quality Control: Ensures long-lasting micronutrient availability in fertilizers used for soils, fertigation, and foliar applications.
- Product Development and Certification: Supports manufacturers in verifying compliance with EU fertilizing product regulations by assessing the chemical stability of micronutrient chelates.
- Research and Innovation: Facilitates optimization of chelating agents and fertilizing formulations by providing reliable stability data across a range of pH levels.
- Environmental Impact Assessment: Helps evaluate the behavior of micronutrient chelates in varying soil and water conditions, contributing to sustainable fertilizer practices.
- Reference for Testing Laboratories: Provides accredited labs with a standardized method for testing fertilizer samples to produce comparable and reliable data.
Related Standards
- EN 12944 Series: Vocabulary and terminology related to fertilizers and liming materials.
- EN 16963: Determination of micronutrients (boron, cobalt, copper, iron, manganese, molybdenum, and zinc) using inductively coupled plasma atomic emission spectrometry (ICP-AES).
- EN 16965: Determination of cobalt, copper, iron, manganese, and zinc using flame atomic absorption spectrometry (FAAS).
- CEN/TS 17786-1 & 17786-2: Methods to quantify chelated micronutrient content and different chelating agents in inorganic micronutrient fertilizers.
- EN ISO 3696: Specifications for water quality suitable for analytical laboratory use.
These complementary standards ensure comprehensive testing of fertilizer products, from terminology and composition to chemical analysis and quality assurance.
Keywords: fertilizer stability, micronutrient chelates, fertilizer testing, European standard, fertilizing product stability, pH stability test, micronutrient availability, chelated micronutrients, agricultural fertilizers, CEN/TS 17782, fertilizer quality control, fertilizer regulations Europe.
Frequently Asked Questions
CEN/TS 17782:2022 is a technical specification published by the European Committee for Standardization (CEN). Its full title is "Fertilizing products - Determination of the stability of fertilizing products containing micronutrient chelates at different pHs". This standard covers: This document specifies a method for the determination of the soluble metal that remains in solution at different pHs after the application of a solution of the fertilizer substance containing micronutrient chelates in a tap water solution used as a reference. The method applies to fertilizing products containing chelated micronutrients.
This document specifies a method for the determination of the soluble metal that remains in solution at different pHs after the application of a solution of the fertilizer substance containing micronutrient chelates in a tap water solution used as a reference. The method applies to fertilizing products containing chelated micronutrients.
CEN/TS 17782:2022 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.
CEN/TS 17782:2022 is associated with the following European legislation: EU Directives/Regulations: 2019/1009; Standardization Mandates: M/564. 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.
You can purchase CEN/TS 17782:2022 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2023
Sredstva za gnojenje - Določanje stabilnosti sredstev za gnojenje, ki vsebujejo
kelate mikrohranil pri različnih pH-vrednostih
Fertilizing products - Determination of the stability of fertilizing products containing
micronutrient chelates at different pHs
Düngeprodukte - Bestimmung der Stabilität von Spurennährstoffchelaten in
Düngeprodukten bei verschiedenen pH Werten
Fertilisants - Détermination de la stabilité des fertilisants contenant des oligo-éléments
chélatés à différents pH
Ta slovenski standard je istoveten z: CEN/TS 17782:2022
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
CEN/TS 17782
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
April 2022
TECHNISCHE SPEZIFIKATION
ICS 65.080
English Version
Fertilizing products - Determination of the stability of
fertilizing products containing micronutrient chelates at
different pHs
Fertilisants - Détermination de la stabilité des Düngeprodukte - Bestimmung der Stabilität von
fertilisants contenant des oligo-éléments chélatés à Spurennährstoffchelaten in Düngeprodukten bei
différents pH verschiedenen pH Werten
This Technical Specification (CEN/TS) was approved by CEN on 21 February 2022 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 17782:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 6
5 Interferences . 6
6 Reagents . 6
7 Apparatus . 7
8 Sampling and sample preparation. 7
9 Procedure . 7
9.1 Preparation of the test sample solution . 7
9.2 Preparation of fertilizer solution in reference tap water . 8
9.3 Spectrometric determination . 8
9.4 Metal chelated content quantification . 8
10 Calculation and expression of results . 9
10.1 Mass concentration of the micronutrient (i) in the reference tap water at a specific
pH . 9
10.2 Stability of fertilizing products containing micronutrient chelates at a specific pH
................................................................................................................................................................. 9
11 Test report . 9
Bibliography . 10
European foreword
This document (CEN/TS 17782:2022) has been prepared by Technical Committee CEN/TC 260
“Fertilizers and liming materials”, the secretariat of which is held by DIN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey
and the United Kingdom.
Introduction
Micronutrients are considered to be, in plant nutrition, a number of elements known to be needed in
small amounts for proper plant growth and development. The most common micronutrient metals are
Iron (Fe), Manganese (Mn), Cobalt (Co), Copper (Cu) and Zinc (Zn).
An EU fertilizing product consists solely of component materials complying with the requirements for
one or more of the component material categories (CMCs). CMC 1 corresponds with the virgin material
substances and mixtures.
If a micronutrient fertilizing product contains a substance, or one of the substances in the mixture,
which is intended to enhance the long-term availability to plants of micronutrients in the EU fertilizing
product, that substance is either a chelating agent or a complexing agent. The EU fertilizing products
containing chelates remain stable for at least three days in a solution having any pH within the range
declared as guaranteeing acceptable stability. Metal chelates can be used in agriculture directly to soils,
in nutrient solution in fertirrigation or soilless culture and in solution for foliar application. Tap water
is a good model for interaction with chelates since it contains calcium and magnesium that may react
chemically with the metal chelates. Composition described for CIPAC (Collaborative International
Pesticides Analytical Council) standard tap water D is a good representative of a tap water of medium
hardness and will be used in this standard to determine the stability for at least three days of
micronutrient chelates at any specific pHs.
This document defines a test method to check the chelate stability in solution, using as a model the
interaction in a reference tap water similar to the CIPAC D.
1 Scope
This document specifies a method for the determination of the soluble metal that remains in solution
at different pHs after the application of a solution of the fertilizer substance containing micronutrient
chelates in a tap water solution used as a reference.
The method applies to fertilizing products containing chelated micronutrients.
2 Normative references
The following documents are referred in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
EN 12944-1, Fertilizers and liming materials — Vocabulary — Part 1: General terms
EN 12944-2, Fertilizers and liming materials — Vocabulary — Part 2: Terms relating to fertilizers
EN 16963, Fertilizers — Determination of boron, cobalt, copper, iron, manganese, molybdenum and zinc
using ICP-AES
EN 16965, Fertilizers — Determination of cobalt, copper, iron, manganese and zinc using flame atomic
absorption spectrometry (FAAS)
CEN/TS 17786-1, Inorganic micronutrient fertilizers — Determination of the chelated micronutrient
content and the chelated fraction of micronutrients — Part 1: Treatment with a cation exchange resin
CEN/TS 17786-2, Inorganic micronutrient fertilizers — Determination of the chelated micronutrient
content and the chelated fraction of micronutrients — Part 2: Determination of E
...
Le document CEN/TS 17782:2022 traite de la détermination de la stabilité des produits fertilisants contenant des chélates de micronutriments à différents niveaux de pH. Ce standard a une portée bien définie : il précise une méthode pour évaluer la quantité de métaux solubles qui demeurent en solution après l’application d’une solution de produit fertilisant dans une solution d’eau du robinet, utilisée comme référence. Cela est particulièrement pertinent pour les produits fertilisants contenant des micronutriments chélatés. L'une des forces de ce standard réside dans sa capacité à fournir une méthode standardisée qui permet de garantir la qualité et l'efficacité des produits fertilisants. En s'appuyant sur une référence, il offre une approche objective pour mesurer la stabilité des chélates de micronutriments, ce qui est essentiel pour les agriculteurs et les producteurs souhaitant optimiser leurs pratiques de fertilisation. La pertinence de CEN/TS 17782:2022 est indéniable dans le contexte actuel agronomique, où l'intérêt pour les fertilisants innovants et efficaces est croissant. La détermination de la stabilité des chélates de micronutriments à différents pH est cruciale pour s'assurer que ces éléments nutritifs sont disponibles pour les plantes dans un environnement varié. En standardisant cette méthode, le document contribue à l'amélioration de la durabilité et de la compétitivité des produits fertilisants sur le marché. En somme, CEN/TS 17782:2022 représente un outil essentiel pour l'industrie des fertilisants, favorisant une utilisation plus responsable et efficace des ressources nutritives dans l'agriculture moderne.
CEN/TS 17782:2022 표준은 미세 영양소 킬레이트를 포함하는 비료 제품의 안정성을 다양한 pH 조건에서 평가하는 방법을 규정하고 있습니다. 이 표준은 비료 물질의 용액이 공급된 후, 다양한 pH 조건에서 용해되어 남아 있는 금속의 양을 결정하는 체계적이고 신뢰할 수 있는 방법을 제공합니다. 이는 농업 분야에서 비료 제품의 품질과 효능을 평가하는 데 매우 중요한 요소입니다. 이 표준의 주요 강점 중 하나는 다양한 pH에서의 비료 제품의 안정성을 규명하는 데 기여하여, 사용자의 효율적인 비료 선택을 가능하게 한다는 것입니다. 또한, 참고용으로 설정된 수돗물 용액을 사용하여 표준화된 조건에서 실험이 이루어지므로, 결과의 신뢰성이 크게 향상됩니다. 이는 미세 영양소가 농작물에 제공되는 방식과 그 효과를 정확하게 파악할 수 있게 합니다. CEN/TS 17782:2022 표준은 또한 특정한 미세 영양소 킬레이트를 포함하는 비료 제품에만 적용되므로, 관련 연구자와 제조업체에게 명확한 가이드를 제공합니다. 이로 인해 업계 전반에서 비료 개발 및 품질 관리의 체계적 접근을 가능하게 하며, 이는 소비자에게 더욱 안전하고 효과적인 비료 제품을 제공하는 데 기여합니다. 결론적으로, CEN/TS 17782:2022 표준은 비료 제품의 안정성을 다양한 pH 조건에서 평가하는 데 있어 필수적인 도구로 기능하며, 농업 산업의 발전에 중요한 역할을 하고 있습니다.
The standard CEN/TS 17782:2022 offers a valuable and specialized method for evaluating the stability of fertilizing products that contain micronutrient chelates across various pH levels. The document's scope is clearly defined, focusing on the determination of soluble metal ions that remain in a solution after the interaction of fertilizing substances with tap water. This specificity is crucial, as it addresses the variations in pH that can significantly affect the solubility and efficacy of micronutrient chelates in agricultural applications. One of the strengths of this standard is its methodical approach, which not only provides a reliable means to assess the stability of these products but also ensures that the testing conditions-namely the use of tap water as a reference-are standardized. This aspect enhances reproducibility in testing results, making it easier for manufacturers and users of fertilizing products to benchmark quality and performance. Furthermore, the relevance of CEN/TS 17782:2022 in the context of agricultural sustainability cannot be overstated. As the demand for efficient fertilization strategies continues to grow, the ability to accurately determine the stability of micronutrient chelates at different pH levels allows for better-informed agricultural practices. This contributes to optimal nutrient delivery and minimizes potential environmental impacts associated with fertilizer use. In addition, the document's alignment with current trends towards greater transparency and accountability in fertilizer formulation and application positions it as an essential resource for stakeholders in the agricultural sector. By establishing a clear methodology for stability testing, the standard supports both regulatory compliance and market competitiveness for manufacturers of fertilizing products. Overall, CEN/TS 17782:2022 stands out as a critical reference for the evaluation of micronutrient chelates in fertilizing products, balancing rigor with practical relevance in modern agricultural practices.
CEN/TS 17782:2022は、微量栄養素キレートを含む肥料製品の安定性をpHの異なる条件下で測定するための方法を仕様化した文書です。この標準の範囲は、肥料物質が含まれる溶液を用いて、異なるpH条件下で溶解した金属分の残留量を決定することにフォーカスしています。具体的には、家庭用水を基準としてこの測定を行うことが義務付けられています。 この標準の主な強みは、微量栄養素のキレート化合物が含まれる肥料製品に対する具体的かつ体系的な評価方法を提供している点です。これにより、肥料の効能を科学的に明確に示すことが可能となります。また、異なるpH条件下での安定性を評価することにより、多様な土壌環境における肥料の行動を理解し、適切な施肥管理を行うための基礎データを提供します。 さらに、この文書は今後の肥料製品の評価基準としても重要な役割を果たすことが期待されます。特に、環境保護や持続可能な農業の推進が求められる現代において、安定性の高い微量栄養素肥料の利用は、農業生産性だけでなく、土壌の健康維持にも寄与します。 まとめると、CEN/TS 17782:2022は、微量栄養素キレートを含む肥料製品の安定性を評価するための信頼性の高い基準を提供しており、その重要性と関連性は非常に高いと評価されます。肥料製品の製造者や農業技術者にとって、欠かせない指針となるでしょう。
Die Norm CEN/TS 17782:2022 bietet eine präzise Methode zur Bestimmung der Stabilität von Düngemitteln, die Mikronährstoffchelate enthalten, bei unterschiedlich variierenden pH-Werten. Ihr Anwendungsbereich ist klar definiert und konzentriert sich spezifisch auf die Analyse von löslichen Metallen, die in einer Lösung verbleiben, nachdem eine Lösung des Düngemittelstoffes, der Mikronährstoffchelate enthält, in einer Referenzlösung aus Leitungswasser angewendet wurde. Ein wesentlicher Vorteil dieser Norm ist ihre Relevanz für die landwirtschaftliche Praxis, da sie sicherstellt, dass die Verfügbarkeit von Mikronährstoffen in Düngemitteln unter verschiedenen pH-Bedingungen systematisch untersucht werden kann. Dies ist besonders wichtig, da die Effizienz von Düngemitteln und die Gesundheit der Pflanzen erheblich von der Stabilität der Mikroelemente abhängen. Die Norm entspricht den aktuellen Anforderungen der Branche und stellt sicher, dass die Ergebnisse zuverlässig und reproduzierbar sind, was für die Optimierung der Düngeanwendung unerlässlich ist. Darüber hinaus stärken die klaren Richtlinien dieser Norm das Vertrauen der Anwendung in die Qualität der Düngemittelprodukte. Durch die standardisierte Methode zur Bestimmung der Stabilität können Hersteller das Verhalten ihrer Produkte unter realistischen Bedingungen besser verstehen und innovativere Formulierungen entwickeln, die anpassungsfähig sind und eine hohe Wirksamkeit bieten. In einer Zeit, in der Nachhaltigkeit und Effizienz in der Landwirtschaft immer wichtiger werden, ist die CEN/TS 17782:2022 von großer Bedeutung für die Entwicklung hochwertiger Düngemittel. Insgesamt ist die Norm eine wesentliche Richtlinie für Hersteller und Anwender von Düngemitteln, die Mikronährstoffchelate enthalten, und trägt zur Verbesserung der Produktqualität und Landwirteffizienz bei, was sie zu einem unverzichtbaren Bestandteil der modernen Landwirtschaft macht.
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...