Perlite is a material of natural origin, it is chemically inert and sterile. For this reason, it has found application in breeding, among others, as a carrier of liquid additives, such as vitamins or drugs. Pharmaceutical Filter Aid is extensively used for enzymes, Epsom salts, and like Penicillin, Streptomycin and Terramycin medicine. A unique benefit to manufacturers using perlite filter aids in pharmaceutical is that spent filter cake is used as a component in animal feed in many countries throughout the world.