About Water

Reverse Osmosis

GE Merlin Reverse Osmosis Sytem

Reverse Osmosis (RO), also known as hyperfiltration, is the finest filtration known. This process will allow the removal of particles as small as ions from a solution.

Reverse osmosis uses a membrane that is semi- permeable, allowing water that is being purified to pass through it, while rejecting the contaminants that remain.

The RO membrane uses crossflow technology which continually passes water across the membrane thus flushing away the rejected contaminants. When the reservoir tank is full, water flow stops completely.

The reject ratio is normally about 75 to 85%, meaning for every litre of pure water collected, 4 to 5 litres of reject water is flushed away. While
this may at first seem excessive; to produce 5 litres of pure water takes the same amount of water as used in a two minute shower.

Because of the ultra fine membrane used in RO, reject rates for nearly all
contaminants are very high; typically around 96- 99+%, depending upon
the contaminant and available water pressure.

Combined with the sediment and activated carbon filters, a quality RO system will remove bacteria, protozoa and viruses and significantly reduce organics, salts, metals, nitrates, pesticides and many more contaminants.

Easy to operate, with instant access to pure water, RO’s require very little maintenance and have an operating cost for the average family of around 4c per litre.

Reverse Osmosis

While GE has decided to redesign the Merlin RO system, About Water continues to support replacement membranes, filters and accessories.

Reverse Osmosis

 

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