ISO 1983:1977 PDF
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Nitric acid for industrial use — Determination of sulphated ash — Gravimetric method
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.
| Edition | 1977 |
|---|---|
| Published Date | 1977 |
| Published By | International Standardization Organisation |
| Page Count | 2 |
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