Filtration stages: six
Capacity: Up to 50GPD
First Stage: spun pp filter cartridge
Second stage: Granular carbon filter cartridge
Third stage: Carbon block cartridge
Forth stage: 50GPD RO membrane
Fifth stage: T33 filter cartridge
Sixth stage: ceramic mineral cartridge
Water tank: 4 Gallon

* cartridges and stage combination can be different for different market