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BSI
BS EN 16109:2011

BS EN 16109:2011

Current

Current

The latest, up-to-date edition.

Fertilizers. Determination of complexed micro-nutrient ions in fertilizers. Identification of lignosulfonates

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-11-2011

Publisher

British Standards Institution

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Sampling and sample preparation
5 Method A: Determination of phenolic hydroxyl content
  and 232,5 nm absorption for the identification of
  lignosulfonates
6 Method B: Determination of organic sulfur content
  for the identification of lignosulfonates
7 Expression of the results
8 Precision
9 Test report
Annex A (informative) - Statistical results of the
        inter-laboratory test
Bibliography

Describes two complementary methods (method A and method B) that allow lignosulfonates to be indentified as soluble complexing agents in fertilizers.

This document specifies two complementary methods (method A and method B) that allow lignosulfonates to be indentified as soluble complexing agents in 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. The methods are applicable to EC fertilizers covered by Regulation (EC) No 2003/2003 [1].

Committee
CII/37
DevelopmentNote
Supersedes 10/30218124 DC. (11/2011) Reviewed and confirmed by BSI, September 2017. (09/2017)
DocumentType
Standard
Pages
22
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
EN 16109:2011 Identical

EN 12944-2:1999/AC:2000 FERTILIZERS AND LIMING MATERIALS AND SOIL IMPROVERS - VOCABULARY - PART 2: TERMS RELATING TO FERTILIZERS
EN 12944-1:1999/AC:2000 FERTILIZERS AND LIMING MATERIALS AND SOIL IMPROVERS - VOCABULARY - PART 1: GENERAL TERMS
EN 1482-2:2007 Fertilizers and liming materials - Sampling and sample preparation - Part 2: Sample preparation
ISO 5725-2:1994 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
ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
EN ISO 3696:1995 Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)
EN 1482-1:2007 Fertilizers and liming materials - Sampling and sample preparation - Part 1: Sampling

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Hardcopy - English
PDF - English
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