Magnesium Sulphate Product Description Agriculture grade Appearance: White granalar Purity: 99.5%min MgSO4: 48.59%min MgO: 16.24%min Mg: 9.80%min PH(5w/V%Sol): 5-9 Fe: 0.0015%max Cl: 0.02%max Pb: 0.001%max As: 0.0002%max Ggranular size(mm) 0.1-1/0.2-3/1-4 Insoluble: 0.01%max Packaging & Shipping Package:Woven bag inner-lined with PE bag, 25 kgs net weight/bag, or on customer's request. Dear customers: We will arrange produce and shippment immediately when you place the order.