Reference number
ISO 907:1976
ISO 907:1976
© ISO 2024
ISO 907:1976
Hydrochloric acid for industrial use — Determination of sulphated ash — Gravimetric method
Edition 1
1976-11
1976-11
Withdrawn
Abstract
The principle of the method consists in evaporation of a test portion; conversion of the salts in sulphates by treatment with sulphuric acid. Ignition in an electric furnace, maintained at (800 +- 50) °C, and weighing. Replaces ISO Recommendation R 907-1968.
Life cycle
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