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See Chinese contents: GB/T 14849.2-2007 GB/T 14849.2-2007: Methods for chemical analysis of silicon metal -- Part 2: Determination of aluminium content -- Chrome azurol S spectrophotometric method
This Part specifies the method for determination of aluminum content in silicon metal. This Part applies to the determination of aluminum content in silicon metal. Determination range (mass fraction): 0.02%~0.30%.
