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See Chinese contents: GB/T 5009.197-2003 GB/T 5009.197-2003: Determination of thiamine hydrochloride, pyridoxine hydrochloride niacin, niacinamide and caffeine in health foods
This Standard specifies the high performance liquid chromatography determination method of thiamine hydrochloride, pyridoxine hydrochloride, niacin, niacinamide and caffeine in health foods.
