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CEN/TS 17721

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

active, Most Current
Organization: CEN
Publication Date: 1 March 2022
Status: active
Page Count: 18
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.

From the scope of this document plant biostimulants other than microbial plant biostimulants are excluded because there is no essential requirement in the Regulation (EU) 2019/1009 [1] for measuring the pH of non-microbial 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:
CEN/TS 17702-2 - Plant biostimulants - Sampling and sample preparation - Part 2: Sample preparation
Published by CEN on March 1, 2022
This document specifies methods for the reduction and preparation of samples of non-microbial plant biostimulants including those intended for determination of microbial pathogens and sets out the...
This document references:
CEN/TS 17724 - Plant biostimulants - Terminology
Published by CEN on March 1, 2022
This document specifies the terms and definitions referred to all the plant biostimulant field and it is constituted by 6 subclauses: Claims Terms relating to components Terms relating to application...
This document is referenced by:
CEN/TS 17718 - Plant biostimulants - Determination of Rhizobium spp.
Published by CEN on March 1, 2022
This document provides the methodology for the enumeration and determination of Rhizobium sp., Mesorhizobium sp., Ensifer sp., or Bradyrhizobium sp. in plant biostimulant products in accordance with...
This document is referenced by:
CEN/TS 17713 - Plant biostimulants - Determination of Azospirillum spp.
Published by CEN on March 1, 2022
This document provides the methodology for the enumeration and determination of Azospirillum spp. in plant biostimulant products in accordance to the Regulation of EU fertilising products [1].
This document is referenced by:
CEN/TS 17722 - Plant biostimulants - Determination of mycorrhizal fungi
Published by CEN on March 1, 2022
This document was developed to provide a horizontal method for enumeration and genera/species determination [1], [2], [3] of mycorrhizal fungi in plant biostimulants products in accordance with the...
This document is referenced by:
CEN/TS 17709 - Plant biostimulants - Determination of Azotobacter spp.
Published by CEN on March 1, 2022
This document was developed to provide the methodology for the enumeration and determination of Azotobacter sp. in plant biostimulant products in accordance with the Regulation (EU) 2019/1009 of the...
This document is referenced by:
NEN-EN 17709 - Plant biostimulants - Determination of Azobacter spp
Published by NEN on May 1, 2023
This document was developed to provide the methodology for the enumeration and determination of Azotobacter sp. [2] [3] in microbial plant biostimulants in accordance with the Regulation (EU)...
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