Reference number
ISO 5314:1981
International Standard
ISO 5314:1981
Fertilizers — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
Edition 1
1981-05
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ISO 5314:1981
11321
Published (Edition 1, 1981)
This publication was last reviewed and confirmed in 2017. Therefore this version remains current.

ISO 5314:1981

ISO 5314:1981
11321
Language
Format
CHF 42
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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.

General information

  •  : Published
     : 1981-05
    : International Standard to be revised [90.92]
  •  : 1
     : 4
  • ISO/TC 134
    65.080 
  • RSS updates

Life cycle

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