... - 230 mesh, 200 - 300 mesh ,300-400mesh, 60-120mesh and 50 - 80 mesh ,ect Silica Gel 230 -400 mesh, this mesh ... Loss on heating, ≤25Specific surface, m2/g≥550300-500200-300≥550300-500200-300Pore volume, ml/g≤0.070.07-0.90≥0 ... .85≤0.700.70-0.90≥0.85Granularity eligibility, ≥150 μ 75-150 μ 50-75 μ 50μ150 μ 75-150 μ 50-75 μ 50μ80 ...