International Standard
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
Reference number
ISO 7408:1983
Edition 1
1983-12
© ISO 2024
International Standard
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Published (Edition 1, 1983)
This standard was last reviewed and confirmed in 2023. Therefore this version remains current.

ISO 7408:1983

Format
Language
CHF 42
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Abstract

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
    Publication date
     : 1983-12
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 5
  • Technical Committee :
    ISO/TC 134
    ICS :
    65.080 
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Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goals

12
Responsible Consumption and Production
2
Zero Hunger
15
Life on Land

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