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ISO 5314:1981

Fertilizers — Determination of ammoniacal nitrogen content — Titrimetric method after distillation

Standard 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.

General Information

Status : Published
Standard Type: Main
Document No: ISO 5314:1981
Document Year: 1981
Pages: 4
Edition: 1
  • Section Volume:
  • ISO/TC 134. Fertilizers and soil conditioners

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ISO 5314:1981
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