The Barrier M Systems are equipped with medium pressure UV lamps as standard which have a wide energy spectrum range - providing the perfect solution to break down combined chlorine effectively and economically. In addition to being used for chlormaine rduction, Barrier M systems will also improve the microbiological water quality because UV is also a very effective technology for the inactivation of bacteria, viruses, and protozoa such as Crytosporidium and Giardia.