Hello,We are looking for;2 Sulfate Aluminum Al2(So4)3 2.1 "Providing, material and labors & testing to supply Aluminum sulfate (Alum), for use in water treatment plants,Form: Solid, granule, White, Received from 3mm mesh size less than ≥ 95%, to meet the following specifications: Aluminum Oxide (as Al₂O₃) = not less than 16.5% Insoluble Solids (impurites) = not more than 0.5% Al kalinatiy (Free Al₂O₃) = not less than 0.05% Acidity (Free H ₂ SO4) = Nil Iron (as Fe ₂ O₃) = not more than 0.05% PH (5% solu.) = 3 Ammonium(as NH₃) = not more than 0.03%