Active standard | Published: 01/05/1981

ISO 5314:1981

Fertilizers — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
(Engrais — Dosage de l´azote ammoniacal — Méthode titrimétrique apres distillation)

Available languages: English, French

Available design: electronic design (pdf), Print design

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Detail information

Designation: ISO 5314:1981

Publication date: 01/05/1981

Pages: 4

Country: International technical standard

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Anotation

Description / Abstract: 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.

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