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BS 3306 78th Edition, April 28, 1978
Complete Document
Superseded By:
Photographic Grade Potassium Metabisulphate
Includes all amendments and changes through Reaffirmation Notice , April 28, 1984
Additional Comments: W/D S/S BY BS ISO 3306
Page Count:8
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Chemical and physical requirements and test methods to establish levels of purity.