... -0.780.70-0.800.68-0.72 Surface area,m2/g≥280≥280200-260≥300≥200≥300 Pore volume,ml/g0.3-0.450.3-0.420.4-0 ... .460.3-0 ... .50.40.3-0.5 Static absorption,Water15-17Fluorin0.12Water50Chlorine10-20Water50-70 Water 17-19 Activity,--56-62--- Loss on abrasion,≤1.0≤1.0≤1.0≤0.7≤0.4≤0 ...