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ISO 904:1976
M00003496
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ISO 904:1976 Hydrochloric acid for industrial use -- Determination of total acidity -- Titrimetric method
standard by International Organization for Standardization, 11/01/1976
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The principle consists in titration of a test portion with a standard volumetric solution of sodium hydroxide in presence of bromcresol green as indicator. Replaces ISO Recommendation R 904-1968.