EN 17704:2024
(Main)Plant biostimulants - Determination of dry matter
Plant biostimulants - Determination of dry matter
This document specifies the procedure for the determination of dry residue and calculation of the dry matter fraction of plant biostimulants for which the results of performed analysis are to be calculated to the dry matter basis.
This document is applicable to the blends of fertilizing products where a blend is a mix of at least two of the following component EU fertilising products categories: Fertilizers, Liming Materials, Soil Improvers, Growing Media, Inhibitors, Plant Biostimulants, and where the following category Plant Biostimulants is the highest percentage in the blend by mass or volume, or in the case of liquid form by dry mass. If Plant Biostimulants is not the highest percentage in the blend, the European Standard for the highest percentage of the blend applies. In case a blend of fertilizing products is composed of components in equal quantity or in case the component EU fertilising products used for the blend have identical formulations , the user decides which standard to apply.
Pflanzen-Biostimulanzien - Bestimmung der Trockenmasse
Dieses Dokument legt das Verfahren zur Bestimmung des Trockenrückstands und Berechnung des Trockenmassenanteils von Pflanzen-Biostimulanzien fest, für die die Ergebnisse der durchgeführten Analyse bezogen auf die Trockenmasse zu berechnen sind.
Dieses Dokument ist für die Mischungen von Düngeprodukten anwendbar, in denen eine Mischung aus mindestens zwei der folgenden Kategorien von Komponenten-EU Düngeprodukten besteht: Düngemittel, Kalkdünger, Bodenverbesserungsmittel, Kultursubstrate, Hemmstoffe, Pflanzen-Biostimulanzien und wenn die folgende Kategorie Pflanzen-Biostimulanzien prozentual den höchsten Massen- oder Volumenanteil in der Mischung bzw., bei flüssiger Form, den höchsten Trockenmasseanteil aufweist. Wenn Pflanzen-Biostimulanzien nicht den höchsten prozentualen Anteil in der Mischung ausmachen, ist die für den höchsten prozentualen Anteil geltende Europäische Norm anwendbar. Falls eine Düngemittelmischung aus Komponenten gleicher Menge besteht oder falls die für die Mischung verwendeten Komponenten-EU Düngeprodukte identische Formulierungen haben, entscheidet der Anwender, welche Norm angewendet wird.
Biostimulants des végétaux - Détermination de la matière sèche
Le présent document spécifie le mode opératoire pour la détermination du résidu sec et le calcul de la fraction de matière sèche de biostimulants des végétaux pour lesquels les résultats des analyses menées doivent être calculés sur la base de la matière sèche.
Le présent document est applicable aux mélanges de fertilisants constitués d’au moins deux composants appartenant aux catégories de fertilisants UE suivantes : engrais, amendements minéraux basiques, amendements du sol, supports de culture, inhibiteurs, biostimulants des végétaux et, dans lesquels la catégorie Biostimulants des végétaux représente le pourcentage le plus élevé du mélange en masse ou en volume, ou dans le cas d’un liquide, en masse sèche. Si les biostimulants des végétaux ne représentent pas le pourcentage le plus élevé du mélange, la Norme européenne relative au composant représentant le pourcentage le plus élevé du mélange s’applique. Dans le cas où un mélange de fertilisants contient des composants en quantité égale ou dans le cas où les composants des fertilisants UE utilisés pour le mélange ont des formulations identiques, l’utilisateur décide quelle norme appliquer.
Rastlinski biostimulanti - Določanje suhe snovi
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2025
Nadomešča:
SIST-TS CEN/TS 17704:2023
Rastlinski biostimulanti - Določanje suhe snovi
Plant biostimulants - Determination of dry matter
Pflanzen-Biostimulanzien - Bestimmung der Trockenmasse
Biostimulants des végétaux - Détermination de la matière sèche
Ta slovenski standard je istoveten z: EN 17704:2024
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 17704
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 65.080 Supersedes CEN/TS 17704:2022
English Version
Plant biostimulants - Determination of dry matter
Biostimulants des végétaux - Détermination de la Pflanzen-Biostimulanzien - Bestimmung der
matière sèche Trockenmasse
This European Standard was approved by CEN on 26 August 2024.
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 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 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, 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, Türkiye 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17704:2024 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 . 5
5 Sampling and sample preparation . 6
6 Interferences . 6
7 Reagents . 6
8 Apparatus . 6
9 Procedure . 6
9.1 General. 6
9.2 Procedure A . 6
9.3 Procedure B . 7
9.4 Procedure A and B . 7
10 Quality control . 7
11 Calculation and expression of results . 7
12 Test report . 8
Annex A (informative) Results of the inter-laboratory study . 9
Bibliography . 12
European foreword
This document (EN 17704:2024) has been prepared by Technical Committee CEN/TC 455 “Plant
biostimulants”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by May 2025, and conflicting national standards shall be
withdrawn at the latest by May 2025.
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 supersedes CEN/TS 17704:2022.
— Introduction;
— Scope – text concerning blends has been improved;
— Normative references to sampling and sample pretreatment have been added;
— Terms and definitions have been modified to be more general;
— Bibliography – references have been reordered;
— Reference to a specific provider of sand has been deleted;
— A subclause to include test results has been added to Clause 12.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
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 implement this European Standard: 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, Türkiye and the United
Kingdom.
Introduction
The European Committee for Standardization (CEN) was requested by the European Commission (EC) to
draft European Standards or European Standardization deliverables to support the implementation of
Regulation (EU) 2019/1009 of 5 June 2019 [1] laying down rules on the making available on the market
of EU fertilising products (“FPR” or “Fertilising Products Regulation”).
This standardization request, presented as SR M/564 and relevant amendments, also contributes to the
Communication on “Innovating for Sustainable Growth: A Bio economy for Europe”. The interest in plant
biostimulants has increased significantly in Europe as a valuable tool to use in agriculture.
Standardization was identified as having an important role in order to promote the use of biostimulants.
The work of CEN/TC 455 seeks to improve the reliability of the supply chain, thereby improving the
confidence of farmers, industry, and consumers in biostimulants, and will promote and support
commercialisation of the European biostimulant industry.
The other standards for determination of dry matter in solid fertilizers and liming materials [2, 3], in soil
improvers and growing media [4] and sludge, soil and other solid matrices [5, 6] were studied as a basis
of the described method. The sand pan technique suitable for liquid biostimulants where there is a risk
of a cake surface formation or foam formation was based on the method of food analysis [7].
WARNING — Persons using this document should be familiar with usual laboratory practice. This
document 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 document are carried out
by suitably trained staff.
1 Scope
This document specifies the procedure for the determination of dry residue and calculation of the dry
matter fraction of plant biostimulants for which the results of performed analysis are to be calculated to
the dry matter basis.
This document is applicable to the blends of fertilizing products where a blend is a mix of at least two of
the following component EU fertilising products categories: Fertilizers, Liming Materials, Soil Improvers,
Growing Media, Inhibitors, Plant Biostimulants, and where the following category Plant Biostimulants is
the highest percentage in the blend by mass or volume, or in the case of liquid form by dry mass. If Plant
Biostimulants is not the highest percentage in the blend, the European Standard for the highest
percentage of the blend applies. In case a blend of fertilizing products is composed of components in equal
quantity or in case the component EU fertilising products used for the blend have identical formulations ,
the user decides which standard to apply.
2 Normative references
The following documents are referred to 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 17702-1:2024, Plant biostimulants — Sampling and sample preparation — Part 1: Sampling
EN 17702-2:2024, Plant biostimulants — Sampling and sample preparation — Part 2: Sample preparation
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org
3.1
dry residue
remaining mass fraction of a sample after a drying process under specified conditions
3.2
dry matter fraction
dry matter
mass fraction of a sample calculated by the determination of dry residue
4 Principle
The samples are dried to a constant mass in an oven at (105 ± 2) °C. The difference in mass before and
after the drying process is used to determine dry matter. This method applies to solid samples and
samples which become solid during the drying process.
An example of such a blend is a product with two claimed functions consisting of a non-microbial plant
biostimulant and an organic fertilizer composed of 1 kg/kg of plant biostimulant from seaweed.
5 Sampling and sample preparation
Sampling and sample preparation are not part of this document. The sampling method and the sample
preparation method given in EN 17702-1:2024 and EN 17702-2:2024 shall be used.
6 Interferences
The samples can change during the drying process, e.g. by absorption of carbon dioxide in the case of
alkaline samples, or of oxygen by reducing substances.
7 Reagents
7.1 Sand, CAS 14808-60-7.
NOTE Other heat stable inert materials, e.g. pumice stone, diatomaceous earth, etc. are also suitable.
8 Apparatus
8.1 Drying system thermostatically controlled and capable of maintaining temperature of
(105 ± 2) °C.
8.2 Desiccator with an active drying agent such as silica gel.
8.3 Analytical balance capable of weighing to an accuracy of 1 mg or better.
8.4 Evaporating dish or crucible. Temperature tolerant laboratory vessel withstanding at least
110 °C. Suitable materials are nickel, platinum, aluminium, ceramic, borosilicate glass or quartz,
porcelain, etc.
9 Procedure
9.1 General
CAUTION — Flammable or explosive gases may be released from some samples in the drying process.
9.2 Procedure A
This procedure is suitable for solid or liquid plant biostimulants. The procedure is not suitable for some
liquid or semi-liquid samples where there is a risk of a cake surface formation or foam formation which
hinders an even drying. For these samples Procedure B (9.3) is preferable.
Place an evaporating dish or crucible (8.4) in the drying system (8.1) set at (105 ± 2) °C for a minimum
of 30 min. After cooling in the desiccator (8.2) to ambient temperature, weigh the dish or crucible (8.4)
to the nearest 1 mg and note as m .
a
Weigh into the evaporating dish or crucible (8.4) 5 g to 10 g of solid sample or 10 g to 30 g of liquid
sample. The mass should be adjusted to ensure that, if possible, at least 0,2 g of dry residue will remain
after the drying process. Spread the sample to an even depth not exceeding 2 cm. Weigh the loaded dish
or crucible (8.4) to the nearest 1 mg and note as m . Place the evaporating dish or crucible (8.4)
b
containing the sample into the drying system (8.1) set at (105 ± 2) °C until the residue appears dry,
typically overnight but not for
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