FprEN 17721
(Main)Plant biostimulants - Determination of the pH for liquid microbial plant biostimulants/pH in microbial products - Determination of pH
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.
Plant biostimulants other than microbial plant biostimulants are excluded from the scope of this document because there is no essential requirement in the Regulation [1] for measuring the pH of non-microbial plant biostimulants.
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.
Andere Pflanzen-Biostimulanzien als mikrobielle Pflanzen-Biostimulanzien gehören nicht zum Anwendungsbereich dieses Dokuments, da die Verordnung [1] keine grundlegenden Anforderungen hinsichtlich der Messung des pH Wertes von nicht-mikrobiellen Pflanzen-Biostimulanzien enthält.
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.
Les biostimulants des végétaux autres que les biostimulants microbiens des végétaux sont exclus du domaine d’application du présent document, car il n’existe pas d’exigence essentielle dans le Règlement [1] de mesure du pH des biostimulants des végétaux non microbiens.
Rastlinski biostimulanti - Določanje pH-vrednosti za tekoče mikrobne biostimulante/mikrobne proizvode - Določanje pH-vrednosti
General Information
Relations
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.
---------------------- Page: 1 ----------------------
oSIST prEN 17721:2023
---------------------- Page: 2 ----------------------
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.
---------------------- Page: 3 ----------------------
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 .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.