ISO/CD 5314

Fertilizers — Determination of ammoniacal nitrogen content — Titrimetric method after distillation ISO/CD 5314

General information

Current stage: 30.60 Close of voting/ comment period Oct 10, 2024

Originator: ISO

Owner: ISO/TC 134 Fertilizers, soil conditioners and beneficial substances

Type: International Standard

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.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 5314:1981

NOW

IN_DEVELOPMENT
ISO/CD 5314
30.60 Close of voting/ comment period
Oct 10, 2024