Ferric Alum Slabs are notable for their milky white or off white appearance. These act as glazing materials in paper production industry. Application of these slabs can also be noticed in water treatment, textile, pharmaceutical, laundry detergent and oil well drilling arena. Ferric Alum Slabs contain maximum 0.30% insoluble matters and up to 0.01% iron. It has 2.8% ph level. Usually, grain size of these substances is either equal to or less than 1 inch. As suitable coagulating factors, these slabs are instrumental in fast removal of suspended solid and also metals like copper and barium present in drinking water.