Fertilizers Determination of ammoniacal nitrogen

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

French, English

Published date

04-07-2016

Publisher

International Organization for Standardization

ISO 25475:2016 specifies a method for the determination of the ammoniacal nitrogen content in fertilizers. The method is applicable to all nitrogenous fertilizers including compound fertilizers, in which nitrogen is found exclusively either in the form of ammonium salts or ammonium salts together with nitrates.

ISO 25475:2016 is not applicable to fertilizers containing urea, cyanamide or other organic nitrogenous compounds.

DevelopmentNote	Supersedes ISO/DIS 25475. (04/2016)
DocumentType	Standard
Pages	12
ProductNote	THIS STANDARD ALSO REFERS TO EN 12944-1,EN 12944-1
PublisherName	International Organization for Standardization
Status	Current

ISO 15604:2016

Fertilizers — Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen

ISO 5725-1:1994	Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
ISO 3696:1987	Water for analytical laboratory use — Specification and test methods