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ISO 7408:1983

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

Standard Details

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.

General Information

Status : Published
Standard Type: Main
Document No: ISO 7408:1983
Document Year: 1983
Pages: 5
Edition: 1
  • Section Volume:
  • ISO/TC 134. Fertilizers and soil conditioners

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ISO 7408:1983
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