SIST EN 17702-2:2025
(Main)Plant biostimulants - Sampling and sample preparation - Part 2: Sample preparation
Plant biostimulants - Sampling and sample preparation - Part 2: Sample preparation
This European Standard specifies methods for the reduction and preparation of samples of non-microbial plant biostimulants including those intended for determination of microbial pathogens and sets out the requirements for sample preparation reports. It specifies methods for the preparation of test samples and test portions from laboratory samples of plant biostimulants for subsequent chemical, biological or physical analysis.
It is also applicable to the sample preparation of blends of fertilizing products where plant biostimulants are main part of the blend. Otherwise, deliverables of sample preparation relevant for the main part of the blend apply.
This European Standard does not include methods for the reduction and preparation of samples of microbial plant biostimulants and will be covered by a different Technical specification.
NOTE This European standard is applicable to the category of EU fertilizing product (plant biostimulants) in the meaning of the Regulation (EU) 2019/1009.
Pflanzen-Biostimulanzien - Probenahme und Probenvorbereitung - Teil 2: Probenvorbereitung
Dieses Dokument legt Verfahren zur Reduzierung und Vorbereitung von Proben von nicht-mikrobiellen Pflanzen-Biostimulanzien, einschließlich solcher, die für die Bestimmung von mikrobiellen Pathogenen vorgesehen sind, fest und regelt die Anforderungen an Berichte zur Probenvorbereitung. Es legt Verfahren zur Herstellung von Untersuchungsproben und Prüfmengen aus Laborproben von Pflanzen-Biostimulanzien für nachfolgende chemische, biologische oder physikalische Analysen fest.
Es ist zudem auf die Probenvorbereitung aus Mischungen von Düngemittelprodukten, bei denen Pflanzen-Biostimulanzien den Hauptbestandteil der Mischung darstellen, anwendbar. Andernfalls gelten die für den Hauptbestandteil der Mischung relevanten Vorgaben für die Probenvorbereitung.
Dieses Dokument umfasst keine Verfahren zur Reduzierung und Vorbereitung von Proben von mikrobiellen Pflanzen-Biostimulanzien; dies wird von einer anderen Europäischen Norm abgedeckt.
ANMERKUNG Dieses Dokument ist anwendbar auf die Kategorie von EU Düngeprodukten (Pflanzen-Biostimulanzien) im Sinne der Verordnung (EU) 2019/1009.
Biostimulants des végétaux - Échantillonnage et préparation des échantillons - Partie 2 : Préparation des échantillons
Le présent document spécifie des méthodes de réduction et de préparation des échantillons de biostimulants non microbiens des végétaux, y compris celles conçues pour la détermination des pathogènes microbiens, et précise les exigences relatives aux rapports de préparation des échantillons. Il spécifie des méthodes de préparation des échantillons pour essai et de prises d’essai à partir d’échantillons pour laboratoire de biostimulants des végétaux en vue d’une analyse chimique, biologique ou physique ultérieure.
Il est également applicable à la préparation des échantillons de mélanges de fertilisants dans lesquels les biostimulants des végétaux représentent la majorité du mélange. Dans le cas contraire, ce sont les livrables de la préparation d’échantillons pertinents pour le fertilisant majoritairement présent dans le mélange qui s’appliquent.
Le présent document n’inclut pas de méthodes de réduction et de préparation des échantillons de biostimulants microbiens des végétaux. Ces derniers seront couverts par une autre Norme européenne.
NOTE Le présent document est applicable à la catégorie de fertilisants UE (biostimulants des végétaux) au sens du Règlement (UE) 2019/1009.
Rastlinski biostimulanti - Vzorčenje in priprava vzorcev - 2. del: Priprava vzorcev
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2025
Nadomešča:
SIST-TS CEN/TS 17702-2:2023
Rastlinski biostimulanti - Vzorčenje in priprava vzorcev - 2. del: Priprava vzorcev
Plant biostimulants - Sampling and sample preparation - Part 2: Sample preparation
Pflanzen-Biostimulanzien - Probenahme und Probenvorbereitung - Teil 2:
Probenvorbereitung
Biostimulants des végétaux - Échantillonnage et préparation des échantillons - Partie 2 :
Préparation des échantillons
Ta slovenski standard je istoveten z: EN 17702-2:2024
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 17702-2
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 65.080 Supersedes CEN/TS 17702-2:2022
English Version
Plant biostimulants - Sampling and sample preparation -
Part 2: Sample preparation
Biostimulants des végétaux - Échantillonnage et Pflanzen-Biostimulanzien - Probenahme und
préparation des échantillons - Partie 2 : Préparation Probenvorbereitung - Teil 2: Probenvorbereitung
des échantillons
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 17702-2:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Principle . 7
5 Apparatus . 7
6 Procedure . 7
6.1 General. 7
6.2 Preparation of test samples in their original condition . 8
6.3 Further preparation of test samples which are to remain in their original condition 8
6.3.1 General. 8
6.3.2 Preparation of test portions for physical testing . 8
6.3.3 Preparation of test portions for moisture analysis . 8
6.3.4 Preparation of test portions for other chemical analyses . 8
6.4 Further preparation of test samples for chemical and biological analysis . 9
6.4.1 General. 9
6.4.2 Use of sample grinder. 9
6.4.3 Use of mortar and pestle . 9
6.5 Products which are difficult to grind mechanically . 9
6.6 Organic matter . 9
6.7 Plant biostimulants comprising several different materials . 9
6.8 Liquid plant biostimulants . 9
6.9 Foreign matter . 10
6.10 Storage . 10
6.11 Taking test portions . 10
6.11.1 Solid plant biostimulants . 10
6.11.2 Liquid plant biostimulants . 10
7 Labelling . 10
8 Sample preparation report . 10
Bibliography . 11
European foreword
This document (EN 17702-2:2024) 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 17702-2:2022.
In comparison with the previous edition, the following technical modifications have been made:
— Introduction, Scope, Terms and definitions, Figures, Bibliography have been updated.
The EN 17702 series, Plant biostimulants — Sampling and sample preparation, consists of the following
parts:
— Part 1: Sampling;
— Part 2: Sample preparation.
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 laying down rules on the making available on the market of
EU fertilising products (“FPR” or “Fertilising Products Regulation”).
This standardization request, presented as 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.
This document covers the following aspects of sample preparation, derived from prEN 1482-2:2023. This
document is presented in a form adapted to the specificity of plant biostimulants. The title of the standard
is given in the Bibliography.
This document is addressed mainly to official laboratories which intend to perform analysis for quality
and safety control of non-microbial plant biostimulants. The laboratories will have a reference document
on how to properly prepare sample for analysis.
Figure 1 gives a schematic diagram of the sampling and sample preparation process.
Figure 1 — Schematic diagram of process of sample preparation for solid plant biostimulants
1 Scope
This document specifies methods for the reduction and preparation of samples of non-microbial plant
biostimulants and sets out the requirements for sample preparation reports. It specifies methods for the
preparation of test samples and test portions from laboratory samples of plant biostimulants for
subsequent chemical, biological or physical analysis.
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: 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.
This document does not include methods for the reduction and preparation of samples of microbial plant
biostimulants and samples intended for determination of microbial pathogens, which will be covered by
a different European Standard.
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
ISO 3310-1, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth
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
test sample
sample prepared from the laboratory sample and from which test portions will be taken
3.2
test portion
quantity of material taken from the test sample (or from the laboratory sample if both are the same) and
on which the test or observation is carried out
[SOURCE: EN 17724:2024, 3.4.24]
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.
4 Principle
Reduction and division of the laboratory sample, as necessary, to produce test samples. Preparation of
test portions from the test samples by division, with or without previous grinding, or by combination, as
appropriate.
5 Apparatus
5.1 General
Apparatus used in the preparation and storage of samples shall be clean and dry and made from materials
which will not affect the characteristics of the plant biostimulants.
5.2 Rotary mechanical sample divider, conforming to the requirements specified in
EN 17702-1:2024, 5.2, or riffle divider, conforming to the requirements specified in EN 17
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.