Ferrous Sulphate Monohydrate Granular F.M.: FeSO4.H2O FeSO4.H2O 91% min. Fe 30% min. Our company produce high quality sulphate salts, such as Ferrous Sulphate Mono / Hept, Manganese Sulphate mono, Zinc Sulphate Mono / Hept., etc.Product: Ferrous Sulphate Monohydrate GranularF.M.: FeSO4.H2OSpecs. FeSO4.H2O 91% min.Fe 30% minPb 10ppm maxCd 5ppm max As 5ppm max particle size 6-14mesh / 14-24mesh / ...