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Inspection standard: HG/T3252-2000
ITEM	STANDARD	ANALYSIS
Na2SiF6%>=	98.5	99.2
Loss of weight on drying at 105 centigrade %<=	0.40	0.08
free acid(HCl)%<=	0.15	0.02
fineness(through 250um sieve)%>=	90	90
water insouble matter%<=	1.0	0.54
iron(Fe)%	/	/
Remark
Result: this lot conform with HG/T3252-2000 standard