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See Chinese contents: GB/T 6901.3-2004 GB/T 6901.3-2004: Chemical analysis of silica refractories -- Part 3: Determination of silicon dioxide -- Hydrofluoric acid gravimetric method
This part specifies the hydrofluoric acid gravimetric method to determine silicon dioxide. This part applies to the determination of silicon dioxide in silica refractories. Measuring range (mass fraction) is greater than 95.00%.
