Reference number
ISO 4322:1977
© ISO 2024
International Standard
ISO 4322:1977
Non-ionic surface active agents — Determination of sulphated ash — Gravimetric method
Edition 1
1977-05
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Published (Edition 1, 1977)
This publication was last reviewed and confirmed in 2019. Therefore this version remains current.

ISO 4322:1977

Language
Format
CHF 42
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Abstract

The method consists in calcination of a test portion in the presence of sulphuric acid solution and weighing of the ash in form of sulphate.

General information

  • Status
     : Published
    Publication date
     : 1977-05
    Stage
    : Close of review [90.60]
  • Edition
     : 1
    Number of pages
     : 2
  • Technical Committee :
    ISO/TC 91
    ICS :
    71.100.40 
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