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See Chinese contents: GB/T 23769-2009 GB/T 23769-2009: Inorganic chemical products -- General method for the determination of pH values
This Standard specifies the principles, safety tips, general provisions, reagents, apparatus, and analytical procedures for the determination of the pH value of aqueous solutions of inorganic chemical products by the potentiometric method. This Standard is applicable to the determination of the pH value of aqueous solutions of inorganic chemical products. The measurement range of pH value is 1~12.
