Original Organic quasky under sink Reverse Osmosis water systems include 2 pre-filters and a membrane that must be replaced periodically.
The different filters represent the different stages that the water goes through while being purified.
Generally Pre-Filters and Post-Filters in RO systems can last aroumd 8 To 12 months between changes. Original OrganicRO membranes can last as long as 5 years .
