1.Ferrous Sulphate Monohydrate 6-12 Mesh 2.Fe>30%,Pb<20ppm,As<2ppm, ... No. and FDA No. 1.Ferrous Sulphate Monohydrate 6-12 Mesh2.Fe>30%,Pb<20ppm,As<2ppm,Cd<5ppm3. ... Category 2: middle granular, granular size: 12-24meshl Category 3: little granular, granular size: 24-40meshl Category 4: powder, powder size: ... to livestock, it can stimulate the growth of animal's body. It can also be used to make pigment ...