CEN/TS 17702-1:2022

SLOVENSKI STANDARD
01-februar-2023
Rastlinski biostimulanti - Vzorčenje in priprava vzorcev - 1. del: Vzorčenje
Plant biostimulants - Sampling and sample preparation - Part 1: Sampling
Pflanzen-Biostimulanzien - Probenahme und Probenvorbereitung - Teil 1: Probenahme
Biostimulants des végétaux - Échantillonnage et préparation des échantillons - Partie 1 :
Échantillonnage
Ta slovenski standard je istoveten z: CEN/TS 17702-1:2022
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 17702-1
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
March 2022
TECHNISCHE SPEZIFIKATION
ICS 65.080
English Version
Plant biostimulants - Sampling and sample preparation -
Part 1: Sampling
Biostimulants des végétaux - Échantillonnage et Biostimulanzien für die pflanzliche Anwendung -
préparation des échantillons - Partie 1 : Probenahme und Probenvorbereitung - Teil 1:
Échantillonnage Probenahme
This Technical Specification (CEN/TS) was approved by CEN on 3 January 2022 for provisional application.
This Technical Specification was corrected and reissued by the CEN-CENELEC Management Centre on 4 May 2022.

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 NORMALISATIO N

EUROPÄISCHES KOMITEE FÜR NORMUN G

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 17702-1:2022 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 Sampling plans and quantitative data . 7
4.1 Principle . 7
4.2 Sampling plans . 7
4.3 Quantitative data . 9
5 Incremental sampling methods . 9
5.1 General. 9
5.2 Solid plant biostimulants in packages – Reduction method using a rotary mechanical
sample divider . 9
5.3 Solid plant biostimulants in packages – Reduction method using a riffle divider . 12
5.4 Sampling of solid plant biostimulants in packages – using a spear . 13
5.5 Sampling of solid plant biostimulants in packages – Manual method . 15
5.6 Sampling of fluid plant biostimulants . 16
6 Reduction of aggregate sample . 17
6.1 General. 17
6.2 Solid plant biostimulants . 17
6.3 Fluid plant biostimulants . 18
7 Division into final samples . 18
8 Practical arrangements for final (laboratory) samples . 18
8.1 General. 18
8.2 Containers . 18
8.3 Sealing of containers. 19
8.4 Labelling of final samples . 19
8.5 Dispatch of the final sample . 19
8.6 Storage of final samples . 19
9 Sampling report . 19
9.1 General. 19
9.2 Essential information . 19
9.3 Additional information . 20
Annex A (informative) Examples of rotating sample dividers . 21
Annex B (informative) Test for bias in a rotary divider . 23
Annex C (informative) Examples of apparatus for sampling of fluid plant biostimulant . 24
Annex D (informative) Methods of mixing for fluid plant biostimulants . 26
Bibliography . 32

European foreword
This document (CEN/TS 17702-1:2022) 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 sampling, derived from EN 1482-1:2007, Fertilizers and
liming materials — Sampling and sample preparation — Part 1: Sampling and documents indicated. This
document is presented in a form adapted to the specificity of plant biostimulants. The titles of the
standards are given in the Bibliography.
From a technical point of view, sampling is generally defined as the withdrawal operation, of the part of
a “mass”, of such dimensions that the properties found in the sample taken are, within the limits of
statistical acceptability, the same as those of the mass of origin (representativeness of the sample). In
other words, the ultimate purpose of sampling is to allow the collection of representative portions of
plant biostimulants to be subject to analysis. Therefore, it fundamentally affects the significance and
reliability of the analytical results themselves.
The final results, in fact, must as far as possible refer to the state and conditions in where the material is
found at the time of collection, therefore, care must be taken to avoid or minimize possible modifications
to the chemical, physical and biological properties of the sample during or after sampling.
In conclusion, for a correct sampling, it is necessary that the sampling and collection of samples take place
quickly, if possible, taking necessary precautions to ensure that they are representative of the plant
biostimulants to be analysed and that the samples taken are stored in appropriate way. The surfaces,
containers and instruments used must be clean and dry.
Furthermore, remember the protection of health and safety in places of work, and that every intervention
must be carried out in compliance with the defined prevention and protection measures (including the
use of any suitable personal protective equipment (PPE)), in particular a careful reading of the labels on
the product and where available on the safety data sheet.
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 sampling plans and methods of representative sampling of plant biostimulants
to obtain samples for physical, chemical and biological analysis.
It is applicable to the sampling of lots of plant biostimulants supplied or ready for supply to third parties,
as such, or in smaller lots.
It is also applicable to the sampling of blends of fertilizing products where plant biostimulants are main
part of the blend. Otherwise, deliverables of sampling relevant for the main part of the blend apply.
This document is intended to be used by manufacturers, buyers and competent authorities to obtain
samples prior to transport and supply it to a laboratory for testing.
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
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
aggregate sample
combination of all increments from the lot
3.2
division
process of producing a number of representative smaller portions, approximately equal in mass to each
other, from a larger mass
3.3
final sample
representat
...