Appearance	brown sphere , bar
Size mm	6~8	6×10~15
Specific gravity kg/L	0.80.05
Strength N/particle ≥	50
Fe2O3 Assay >	40%
Specific surface area m2/g ≥	80
Hole volume ml/g	0.40.05
Sulfur capacity %	12~15(changed by oxygen Assay and H2S concentration in inlect )

Packing
      50L in membrane bag lined polypropylene woven bag .
      far away from moisture, moist and sunlight