Reference number
ISO 1983:1977
ISO 1983:1977
Nitric acid for industrial use — Determination of sulphated ash — Gravimetric method
Edition 1
1977-11
Withdrawn
ISO 1983:1977
6715
Withdrawn (Edition 1, 1977)

Abstract

The principle of the method consists inevaporation of a test portion in a platinum dish, conversion of the residue to sulphates by treatment with sulphuric acid; ignition in an electric furnace, controlled at (800 +- 25) °C, and weighing. Replaces ISO Recommendation R 1983-1971.

General information

  •  : Withdrawn
     : 1977-11
    : Withdrawal of International Standard [95.99]
  •  : 1
     : 2
  • ISO/TC 47
    71.060.30 
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