Organominerální hnojiva - Identifikace komplexotvorných činidel - Část 1: Metoda využívající UV-Vis spektrofotometrii a gravimetrii (Norma k přímému použití jako ČSN).

The information about the standard:

Designation standards: ČSN P CEN/TS 17784-1
Classification mark: 654947
Catalog number: 515824
Publication date standards: 1.12.2022
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Kategória: Technické normy ČSN

Annotation of standard text ČSN P CEN/TS 17784-1 (654947):

This document specifies two methods required for the identification of lignosulfonate by UV-Vis spectrophotometry (method A) and gravimetry (method B) in organo-mineral fertilizers.
NOTE - Lignosulfonate, as a complexing agent, is a natural polymer produced as a by-product of the sulfite method for manufacturing paper from wood pulp in the paper industry. As a natural polymer, it presents a poorly defined and variable chemical structure. It is an intricate mixture of small- to moderate-sized polymeric compounds with sulfonate groups attached to the molecule, and diverse complexing capacity