FprEN 17721

Plant biostimulants - Determination of the pH for liquid microbial plant biostimulants/pH in microbial products - Determination of pH

This document specifies a method for laboratory measurement of the pH value in liquid microbial plant biostimulants, using pH electrodes with a glass membrane.
This document does not apply to plant biostimulants other than microbial plant biostimulants.
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 fertilizing products categories: Fertilizers, Liming Materials, Soil Improvers, Growing Media, 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 des pH‑Wertes für flüssige mikrobielle Pflanzen-Biostimulanzien/pH‑Wert in mikrobiellen Produkten - Bestimmung des pH‑Wertes

Dieses Dokument legt ein Verfahren zur Messung des pH Wertes in flüssigen mikrobiellen Pflanzen-Biostimulanzien im Labor unter Verwendung von pH Elektroden mit einer Glasmembran fest.
Dieses Dokument ist nicht anwendbar auf andere Pflanzen-Biostimulanzien als mikrobielle Pflanzen-Biostimulanzien.
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, 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 du pH des biostimulants microbiens liquides des végétaux/pH dans les produits microbiens - Détermination du pH

Le présent document spécifie une méthode de mesure en laboratoire de la valeur du pH dans les biostimulants microbiens des végétaux sous forme liquide, à l’aide d’électrodes de pH avec une membrane en verre.
Le présent document ne s’applique pas aux biostimulants des végétaux autres que les biostimulants microbiens des végétaux.
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, 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 pH-vrednosti za tekoče mikrobne biostimulante/mikrobne proizvode - Določanje pH-vrednosti

General Information

• Status: Not Published
• Publication Date: 01-May-2024
• ICS: 65.080 - Fertilizers
• Technical Committee: CEN/TC 455 - Plant Biostimulants and Agricultural Micro-Organisms
• Drafting Committee: CEN/TC 455/WG 3 - Pathogenic and non-pathogenic microorganisms
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Start Date: 02-Nov-2023
• Due Date: 10-Oct-2023
• Completion Date: 02-Nov-2023
• Directive: 2019/1009 - Regulation (EU) 2019/1009 of the European Parliament and of the Council of 5 June 2019 laying down rules on the making available on the market of EU fertilising products and amending Regulations (EC) No 1069/2009 and (EC) No 1107/2009 and repealing Regulation (EC) No 2003/2003
• Mandate: M/564 - Fertilising products in support of Regulation (EU) 2019/1009
• Mandate: M/564 AMD 1 - amending Implementing Decision C(2020) 612 as regards certain harmonised standards and standardisation deliverables, deadlines for their adoption and the duration of the validity of the standardisation request
• Mandate: M/XXX - Commission Implementing Decision on a standardisation request as regards ecodesign requirements for smartphones, mobile phones other than smartphones, cordless phones and slate tablets in support of Regulation (EU) 2023/1670 and Delegated Regulation (EU) 2023/1669
• Ref Project: oSIST prEN 17721:2023 - Plant biostimulants - Determination of the pH for liquid microbial plant biostimulants/pH in microbial products - Determination of pH

Relations

• Revises: CEN/TS 17721:2022 - Plant biostimulants - Determination of the pH for liquid microbial plant biostimulants/pH in microbial products - Determination of pH
• Effective Date: 15-Feb-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 17721:2023
01-maj-2023
Rastlinski biostimulanti - Določanje pH-vrednosti za tekoče mikrobne
biostimulante/mikrobne proizvode - Določanje pH-vrednosti
Plant biostimulants - Determination of the pH for liquid microbial plant biostimulants/pH in
microbial products - Determination of pH
Pflanzen-Biostimulanzien - Bestimmung des pH Wertes für flüssige mikrobielle Pflanzen-
Biostimulanzien/pH Wert in mikrobiellen Produkten - Bestimmung des pH Wertes
Biostimulants des végétaux - Détermination du pH des biostimulants microbiens liquides
des végétaux/pH dans les produits microbiens - Détermination du pH
Ta slovenski standard je istoveten z: prEN 17721
ICS:
65.080 Gnojila Fertilizers
oSIST prEN 17721:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 17721:2023

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oSIST prEN 17721:2023


DRAFT
EUROPEAN STANDARD
prEN 17721
NORME EUROPÉENNE

EUROPÄISCHE NORM

April 2023
ICS 65.080 Will supersede CEN/TS 17721:2022
English Version

Plant biostimulants - Determination of the pH for liquid
microbial plant biostimulants/pH in microbial products -
Determination of pH
Biostimulants des végétaux - Détermination du pH des Pflanzen-Biostimulanzien - Bestimmung des pH Wertes
biostimulants microbiens liquides des végétaux/pH für flüssige mikrobielle Pflanzen-Biostimulanzien/pH
dans les produits microbiens - Détermination du pH Wert in mikrobiellen Produkten - Bestimmung des pH
Wertes
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 455.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17721:2023 E
worldwide for CEN national Members.

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oSIST prEN 17721:2023
prEN 17721:2023 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 9
5 Apparatus and materials . 9
5.1 General . 9
5.2 pH measuring apparatus . 9
5.3 Water .
...