Carbon or carbon block filters works well at removing chlorine, however, more and more municipalities are adding chloramine or ammonia to the water treatment processes to stabilize the Chlorine from releasing harmful by-products into the water. As we all know, ammonia is toxic. The MERO catalytic carbon is a high grade carbon that has the correct properties for removing chloramine and ammonia from water supplies. Our catalytic carbon has a high degree of catalytic redox activity, and an extremely high surface area which is necessary for chloramine removal. This carbon is acid washed and pH buffered. Only the best from ME!