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How does it work?
Reverse osmosis membranes are made from semi-permeable thin film composites and are more delicate than standard carbon and sediment water filters.
RO membranes provide the ultimate water purification and using sediment and carbon filters before and after the RO process to remove larger particles will prevent damaging the membrane and help it to continue performing effectively for longer.
In most under sink, mains fed Reverse Osmosis systems, water first passes through a sediment filter to remove impurities like silt, rust, sand, scale particles and dirt.
Carbon block filters then remove pesticides, chlorine and herbicides before water is forced at pressure through the RO membrane.
The RO membrane rejects up to 99% of remaining impurities, including organic and inorganic chemicals.
In 4 and 5-stage RO systems, purified water is passed through additional carbon and specialist filters to improve taste and replace essential minerals.
