ISO 5314:1981
Fertilizers; Determination of ammoniacal nitrogen content; Titrimetric method after distillation

Standard No.

ISO 5314:1981

Release Date

1981

Published By

International Organization for Standardization (ISO)

Latest

ISO 5314:1981

Scope

The method consists in distilling of the ammonia from an alkaline solution, absorbing in an excess of standard volumetric sulphuric acid solution and back-titrating with standard volumetric sodium hydroxide solution. It is applicable only in the absence of urea or its derivatives, of cyanamide and of organic nitrogenous compounds.

ISO 5314:1981 history

• 1981 ISO 5314:1981 Fertilizers; Determination of ammoniacal nitrogen content; Titrimetric method after distillation