ISO/DIS 5314

Fertilizers — Determination of ammoniacal nitrogen content — Titrimetric method after distillation

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.

OEN:

ISO

Langue:

English

Code(s) de l'ICS:

65.080

Statut:

Brouillon

Date de Publication:

1969-12-30

Numéro Standard:

ISO/DIS 5314