Codes & Standards - Purchase
ISO 5314:1981
Fertilizers -- Determination of ammoniacal nitrogen content -- Titrimetric method after distillation
SKU: iso_011321_104378
Published by ISO
Publication Year 1981
1 Edition
4 pages
Product Details
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.