Product Details: Grade Standard Industrial Grade Packaging Type Bag Packaging Size 25 kg Nett Type Monohydrate, Anhydrous Form Crystals Content Assay 99.5 % Min Humidity Moisture 9 % Max Calcium 200 PPM Max Chloride 50 PPM Max Iron 10 PPM Max Sulphate 20 PPM Max Oxalates 50 PPM Max Lead 0.5 PPM Max Arsenic 1 PPM Max Sulphate Ash 0.05 PPM Max   Specification : Appearance Specification Limits Barium Conforming with test Heavy Metals , As Pb 5 PPM Max Readily Carbonisable Substances Conforming with test Organic Volatile Impurities Conforming with test Uv Absorbance Conforming with test Mercury Nil