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See Chinese contents: GB/T 13025.10-2012 GB/T 13025.10-2012: General test method in salt industry -- Determination of ferrocyanide
This Part of GB/T 13025 specifies the test method of determining the ferrocyanide in the edible salt. The ferrous sulfate method in this Part is applicable to the determination of samples with a ferrocyanide content of 1mg/kg above; while the pyridine-pyrazolone method is applicable to the determination of samples with a ferrocyanide content of 1mg/kg below.
