The Ion Exchange Resins Filter - Cartridge 3rd (48122B)
* Every 6000 litres/ 12 months (whichever comes first)

* Removes unpleasant odours, organic & inorganic chemicals, heavy metals

Kindly refer to the link below for Cartridge 1st / Cartridge 2nd:
http://list.qoo10.sg/item/HEXAGON-WATER-FILTRATION-SYSTEM/454215949?sellerview=on

Kindly refer to the link below for Hexagon™ Water Filtration System 2:
http://list.qoo10.sg/item/HEXAGON-WATER-FILTRATION-SYSTEM/443902621?sellerview=on