Standard

ISO 7408:1983 en

Fertilizers - Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide - Titrimetric method

31,57 38,20 Incl BTW

About norm

Status Current
Number of pages 5
Committee Meststoffen
Published on 01-12-1983
Language English
The method consists in entraining, by means of a strong current of air, of the ammonia from a moderately alkaline test mixture at ambient temperature into standard volumetric sulfuric acid solution, and back-titrating of the excess sulfuric acid solution with standard volumetric sodium hydroxide solution.

Details

ICS-code 65.080
English title Fertilizers - Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide - Titrimetric method

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