WS1 Cl, 2 Cuft, 1.8m³/hr, Duplex CR100Crystal Right works by an ion exchange process which removes iron, manganese and hardness. The minimum pH requirement for CR200 is 7. 0. CR200 has the highest capacity from removing hardness, iron amd manganese. Crystal Right works at its best on clear water, i. e. when the iron manganese are in a dissolved form. Crystal Right will also remove hardness with no extra treatment. Ammonia, lead, hydrogen sulphide and copper can also be reduced. The media