Reference number
ISO 5310:1986
© ISO 2024
ISO 5310:1986
Fertilizers — Determination of potassium content — Titrimetric method
Edition 1
1986-12
Withdrawn
Withdrawn (Edition 1, 1986)

Abstract

The method consists in precipitating of potassium ions by an excess of sodium tetraphenylborate (NaTPB) in a weakly alkaline medium, filtrating and determing of the unused NaTPB by back titration with cetyltrimethylammoniumbromide solution. The test solution shall be prepared as specified in ISO 5317 or ISO 7407.

General information

  • Status
     : Withdrawn
    Publication date
     : 1986-12
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 4
  • Technical Committee :
    ISO/TC 134
    ICS :
    65.080 
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