NA 057

DIN Standards Committee Food and Agricultural Products

Project

Plant biostimulants - Determination of the pH for liquid microbial plant biostimulants/pH in microbial products - Determination of pH; German version EN 17721:2024

Abstract

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 because there is no essential requirement in the Regulation [1] for measuring the pH of non-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.

Begin

2022-03-10

WI

00455023

Planned document number

DIN EN 17721

Project number

05702234

Responsible national committee

NA 057-03-06 AA - Plant biostimulants  

Responsible european committee

CEN/TC 455/WG 3 - Pathogenic and non-pathogenic microorganisms  

draft standard

Plant biostimulants - Determination of the pH for liquid microbial plant biostimulants/pH in microbial products - Determination of pH; German and English version prEN 17721:2023
2023-05
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previous edition(s)

Plant biostimulants - Determination of the pH for liquid microbial plant biostimulants/pH in microbial products - Determination of pH; German version CEN/TS 17721:2022
2022-07

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Contact

Philipp Döring

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10787 Berlin

Tel.: +49 30 2601-2824
Fax: +49 30 2601-42824

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