In these disinfectants, iodine is incorporated along with a detergent. They are not as effective as hypochlorites against bacterial spore but also get inactivated in the presence of organic matter. They have a long shelf life, but once dissolved, the iodine may vapourize. Iodophors, are generally used in the dairy industry due to their bactericidal capacity, as well as, the presence of phosphoric acid which is helpful in the control of milk stone. The stone is the deposition of mineral salts on equipments due to the presence of fats and proteins.