Chloramine

[Sherita]

Actually Chris, that's not correct. The rule for chloramines removal with an rodi system is 20 minutes of contact with 20" of carbon for effective removal. Since most rodi systems have 20" of carbon, but lack the necessary contact time, it can be dealt with by adding an additional housing with a cartridge of catalytic carbon. The cat carbon needs to be the second cartridge in line, directly after the sediment filter. This prevents carbon dust getting into the membrane. Chloramines can also be dealt with by using a chloramines removal cartridge. A specialized rodi is not needed to removed chloramines. My system is set up for chloramines removal, it runs like this:

sediment filter
catalytic carbon (refillable cartridge)
standard carbon block
chloramines removal block (added insurance)
ro membrane
di resin (refillable cartridge)

the chloramines removal cartridge is not really necessary for my system (it could be replaced with a standard carbon block), since I have the required 20" of carbon, and the needed contact time. But I view the cartridge as added insurance.


And Prime will neutralize chloramines, it's used by a large number of people in the dfw area whose rodi filtrations are not set up for chloramines removal. The instructions on the Prime bottle actually list chloramines removal, and the correct dosage. Seachem got on top of the game when chloramines started to become an issue.