CEN/TC 455/WG 5 - Labelling and denominations

This document specifies the methods to be used for the determination of quantity of plant biostimulants sold or offered for sale.
This document specifies the methods to be used for the determination of quantity of solid and liquid forms of plant biostimulants in packages, containers or in bulk.
This document is not applicable to the quantity determination of: inorganic, organic and organo-mineral fertilizers, liming materials, inhibitors, soil improvers and growing media.
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 fertilising products categories: Fertilizers and Plant Biostimulants, and where the following category Plant Biostimulants is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass. If Plant Biostimulants is not the highest % in the blend, the European Standard for the highest % 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.

This document specifies a potentiometric method for the determination of chloride (Cl-) content in the presence or in the absence of organic material. This method is applicable to 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 fertilising products categories: Fertilizers, Liming Materials, Soil Improvers, Growing Media, Inhibitors, Plant Biostimulants, and where the following category Plant Biostimulants is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass. If Plant Biostimulants is not the highest % in the blend, the European Standard for the highest % 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.

This document defines terms and definitions referred to in the plant biostimulant field and consists of six subclauses:
3.1   Claims
3.2   Terms relating to components
3.3   Terms relating to the application method
3.4   Terms relating to sampling
3.5   Terms relating to the physical form
3.6   Others terms relating to plant biostimulants

This document specifies the methods to be used for the determination of quantity of solid and liquid forms of plant biostimulants in packages, containers or in bulk.
This document is not applicable to the quantity determination of: soil improvers, growing media, organic and organo-mineral fertilizers and fertilizing product blends whose main constituent is a growing media or soil improver. The method for quantity determination for these products is given in EN 15761, EN 15238 and EN 12580.

This document specifies the terms and definitions referred to all the plant biostimulant field and it is constituted by 6 subclauses:
3.1   Claims
3.2   Terms relating to components
3.3   Terms relating to application method
3.4   Terms relating to sample preparation
3.5   Terms relating to physical form
3.6   Others terms relating to plant biostimulants

This document specifies a potentiometric method for the determination of chloride (Cl-) content in the presence or in the absence of organic material. This method is applicable to plant biostimulants.