Plant biostimulants - Determination of dry matter

This document specifies the procedure for the determination 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 also applicable to the blends of fertilizing products where plant biostimulants are the main part of the blend. Otherwise, the Technical Specification for the main part of the blend applies.

Pflanzen-Biostimulanzien - Bestimmung der Trockenmasse

Dieses Dokument legt das Verfahren zur Bestimmung 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 auch anzuwenden für die Mischungen von Düngeprodukten, in denen die Pflanzen-Biostimulanzien der Hauptbestandteil der Mischung sind. Andernfalls ist die Technische Spezifikation für den Hauptbestandteil der Mischung anzuwenden.

Biostimulants des végétaux - Détermination de la matière sèche

Le présent document spécifie le mode opératoire pour la détermination 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 également applicable aux mélanges d’engrais dont la majeure partie est constituée de biostimulants des végétaux. Dans le cas contraire, la Spécification Technique relative au constituant principal du mélange s’applique.

Rastlinski biostimulanti - Določevanje suhe snovi

Ta dokument določa postopek za določevanje deleža suhe snovi v rastlinskih stimulantih, za katere se rezultati izvedene analize izračunajo na podlagi suhe snovi.
Dokument je uporaben tudi za mešanice sredstev za gnojenje, pri katerih so rastlinski biostimulanti glavni del mešanice. V nasprotnem primeru se uporablja tehnična specifikacija za glavni del mešanice.

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Technical specification
TS CEN/TS 17704:2023
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Standards Content (Sample)

Rastlinski biostimulanti - Določevanje 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: CEN/TS 17704:2022
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 17704
March 2022
ICS 07.080
English Version
Plant biostimulants - Determination of dry matter
Biostimulants des végétaux - Détermination de la Biostimulanzien für die pflanzliche Anwendung -
matière sèche Bestimmung der Trockenmasse
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.


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 17704:2022 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 . 5
5 Sampling and sample preparation . 5
6 Interferences . 5
7 Reagents . 5
8 Apparatus . 6
9 Procedure . 6
9.1 Procedure A . 6
9.2 Procedure B . 6
9.3 Procedure A and B . 7
10 Quality control . 7
11 Calculation and expression of results . 7
12 Test report . 8
Bibliography . 9

European foreword
This document (CEN/TS 17704:2022) has been prepared by the 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.
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
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 4 “Other safety parameters”, 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. The preparation of this document is based on
a standardization request to CEN by the European Commission and the European Free Trade Association
(Mandate M/564) concerning the modernization of methods of analysis of fertilizers within the
framework of Regulation (EU) 2019/1009 of the European Parliament and of the Council.
In case of the analysis of plant biostimulants, water is usually not considered a part of the sample and
results are generally related to dry matter, which can be calculated by determining the dry residue (dry
matter fraction).
WARNING – Persons using this Technical Specification 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 t

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