CEN/TS 17784-1:2022

Organo-mineral fertilizers - Identification of complexing agents - Part 1: Method using UV-Vis spectrophotometry and gravimetry CEN/TS 17784-1:2022

Publication date:   Aug 17, 2022

General information

60.60 Standard published   Apr 6, 2022

CEN

CEN/TC 260 Fertilizers and liming materials

Technical Specification

65.080   Fertilizers

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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.

Related legislation

Legislation related to this standard

2019/1009

Regulation (EU) 2019/1009 of the European Parliament and of the Council of 5 June 2019 laying down rules on the making available on the market of EU fertilising products and amending Regulations (EC) No 1069/2009 and (EC) No 1107/2009 and repealing Regulation (EC) No 2003/2003 (Text with EEA relevance)

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PUBLISHED
CEN/TS 17784-1:2022
60.60 Standard published
Apr 6, 2022