This Post filter can be used on all our systems. It will also fit all other makes of RO systems. 

Supplied pre-filled with DI resin, this cartridge represents excellent value considering it's double the size supplied by other retailers giving a much larger capacity and greater life between refills.

Coventry Aquatics sell DI Resin by the litre so you can refill this cartridge over and over.

To attach this cartridge to your existing system you will need two housing to housing clips. 

These cartridges are designed as a polisher for low TDS feed water It is advisable to use an inline TDS meter with this filter to determine when the resin is exhausted.