CEN/TS 17702-2:2022
(Main)Plant biostimulants - Sampling and sample preparation - Part 2: Sample preparation
Plant biostimulants - Sampling and sample preparation - Part 2: Sample preparation
This document 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 document does not include methods for the reduction and preparation of samples of microbial plant biostimulants, which will be covered by a different Technical Specification.
NOTE This document 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 Technischen Spezifikation 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, 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 Spécification technique.
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
Ta dokument določa metode za omejitev in pripravo vzorcev nemikrobnih rastlinskih biostimulantov, vključno s tistimi, namenjenimi za določanje mikrobnih patogenov, ter določa zahteve za poročila o pripravi vzorcev. Določa metode za pripravo preskusnih vzorcev in preskusnih količin iz laboratorijskih vzorcev rastlinskih biostimulantov za nadaljnje kemijske, biološke ali fizikalne analize.
Uporaben je tudi za pripravo vzorcev mešanic sredstev za gnojenje, pri katerih so rastlinski biostimulanti glavni del mešanice. V nasprotnem primeru se uporabijo rezultati priprave vzorcev, ki veljajo za glavni del mešanice.
Ta dokument ne vključuje metod za omejitev in pripravo vzorcev mikrobnih rastlinskih stimulantov, ki bodo zajeti v drugi tehnični specifikaciji.
OPOMBA: Ta dokument se uporablja za kategorijo sredstev za gnojenje EU (rastlinski biostimulanti) v smislu Uredbe (EU) 2019/1009.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-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: CEN/TS 17702-2:2022
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
CEN/TS 17702-2
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
March 2022
TECHNISCHE SPEZIFIKATION
ICS 65.080
English Version
Plant biostimulants - Sampling and sample preparation -
Part 2: Sample preparation
Biostimulants des végétaux - Échantillonnage et Biostimulanzien für die pflanzliche Anwendung -
préparation des échantillons - Partie 2 : Préparation Probenahme und Probenvorbereitung - Teil 2:
des échantillons Probenvorbereitung
This Technical Specification (CEN/TS) was approved by CEN on 3 January 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 17702-2:2022 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 . 8
6.1 General. 8
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
6.4 Further preparation of test samples for chemical and biological analysis . 9
6.5 Products which are difficult to grind mechanically . 9
6.6 Organic matter . 9
6.7 Plant biostimulants comprising several different materials . 10
6.8 Fluid plant biostimulants . 10
6.9 Foreign matter . 10
6.10 Storage . 10
6.11 Taking test portions . 10
7 Labelling . 10
8 Sample preparation report . 10
Bibliography . 12
European foreword
This document (CEN/TS 17702-2:2022) has been prepared by Technical Committee CEN/TC 455 “Plant
Biostimulants”, the secretariat of which is held by AFNOR.
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.
The CEN/TS 17702 series, Plant biostimulants — Sampling and sample preparation, consists of the
following parts:
— Part 1: Sampling;
— Part 2: Sample preparation.
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
This document was prepared by the experts of CEN/TC 455 “Plant Biostimulants”. 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 fertilizing products (“FPR” or “Fertilising Products Regulation”).
This standardization request, presented as M/564, also contributes to the Communication on “Innovating
for Sustainable Growth: A Bio economy for Europe”. The Working Group 1 “Sampling”, was created to
develop a work program as part of this request. The technical committee CEN/TC 455 “Plant
Biostimulants” was established to carry out the work program that will prepare a series of standards. The
interest in 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 EN 1482-2:2007,
Fertilizers and liming materials — Sampling and sample preparation — Part 2: Sample preparation. 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 sampling and sample preparation process for solid plant
biostimulants
1 Scope
This document 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 document does not include methods for the reduction and preparation of samples of microbial plant
biostimulants, which will be covered by a different Technical Specification.
NOTE This document is applicable to the category of EU fertilizing product (plant biostimulants) in the
meaning of the Regulation (EU) 2019/1009.
2 Normative references
The following document is 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.
CEN/TS 17702-1:2022, 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.
3.1
division
process of producing a number of representative smaller portions, approximately equal in mass to each
other, from a larger mass
3.2
final sample
representative part of the reduced sample or, where no intermediate reduction is required, of the
aggregate sample
Note 1 to entry: Often, more than one sample is prepared, at the same time, from the reduced sample (or from the
aggregate sample). One or more of these final samples will be used as a laboratory sample or as laboratory samples,
while others may be stored for reference purposes.
3.3
laboratory sample
final sample intended for laboratory inspection or testing
3.4
reduction
process of producing a representative smaller mass of product from a larger mass, with the remainder
being discarded
3.5
test portion
quantity of material taken from the test sample (or if both are the same, from the laboratory sample) and
on which the test or observation is carried out
3.6
test sample
sample prepared from the laboratory sample and from which test portions will be taken
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 sample divider, conforming to the requirements specified in CEN/TS 17702-1:2022, 5.2,
or riffle divider, conforming to the requirements specified in CEN/TS 17702-1:2022, 5.3.
5.3 Sample grinder, capable of taking the whole sample at one pass and, preferably, totally enclosed.
It shall have a screen, or other mechanism without a screen, which allows the ground material to pass
through the machine into a collecting vessel and away from the cutters or grinding discs, to avoid
overgrinding. In the case of a grinder with screens, the fineness of grind can be adjusted by the fitting of
different mesh screens. Grinding shall continue until as much as possible of the plant biostimulants has
passed through the machine.
NOTE If the grinder is of the open type, the moisture content of the plant biostimulants can change significantly
during grinding.
Any machine used for grinding samples as required by this document shall be checked for satisfactory
performance. Points to be checked are:
a) the fineness of grinding achieved;
b) the temperature rise of the material being ground (see 6.4);
c) non-contamination of the sample.
5.4 Mortar and pestle, of suitable material and size.
5.5 Test sieves, conforming to ISO 3310-1, of nominal aperture sizes 1,0 mm,500 µm and 180 µm.
In cases where national regulations or the nature of the material require sieves of different aperture sizes,
these may be used but the fact should be noted in the sample preparation report.
5.6 Sample containers, made of plastics material and/or glass, or any other material of adequate
resistance and fitted with air-ti
...
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