3N SnO2 99.9%, Impurity Max each
Sb/Fe 0.0015%, Bi/Pb 0.01%, As 0.001%
Specific surface area: 10
Bulk density 0.1
Size: 50-70nm
4N SnO2 99.99%, Impurity Max each
Al 0.0003%, Mg/Cu/Ag 0.0002%, Ca/Si/Fe 0.0005%, Zn/Pb/Ni/Mo/Zr 0.0001%
BET
Size: 20-70nm or micron grade ***ailable
Packing: in plastic bag , cardboard drum outside.