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CEN - PREN 17721

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

pending
Organization: CEN
Publication Date: 1 April 2023
Status: pending
Page Count: 20
ICS Code (Fertilizers): 65.080
scope:

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 nonmicrobial plant biostimulants.

Document History

PREN 17721
April 1, 2023
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...
CEN/TS 17721
March 1, 2022
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. From the scope of this document plant...

References

This document references:
EN ISO 19396-1 - EN ISO 19396-1
Published by CEN on February 1, 2020
This document specifies a method for laboratory measurement of the pH value of polymer dispersions and coating materials using pH electrodes with a glass membrane. ISO 19396-2 specifies a method for...
This document references:
EN ISO 3696 - Water for Analytical Laboratory Use- Specification and Test Methods
Published by CEN on January 1, 1995
A description is not available for this item.
This document references:
EN ISO 80000-9 - Quantities and units - Part 9: Physical chemistry and molecular physics
Published by CEN on October 1, 2019
This document gives names, symbols, definitions and units for quantities of physical chemistry and molecular physics. Where appropriate, conversion factors are also given.
This document references:
1069/2009 - REGULATION OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL laying down health rules as regards animal by-products and derived products not intended for human consumption and repealing Regulation (EC) No 1774/2002 (Animal by-products Regulation)
Published by EU on October 21, 2009
A description is not available for this item.
This document references:
NO 2003/2003 - REGULATION OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 13 October 2003 relating to fertilisers
Published by EU on November 21, 2003
A description is not available for this item.
This document references:
ISO 5725-2 - Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
Published by ISO on December 1, 2019
This document — amplifies the general principles for designing experiments for the numerical estimation of the precision of measurement methods by means of a collaborative interlaboratory experiment;...
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