Our response to the COVID-19 pandemic.
Learn more
View Cart
shopping cart

What is 4 Stage Reverse Osmosis?

Resource Centre
What is 4 Stage Reverse Osmosis?
4 stage reverse osmosis purifier banner
Water types
The Water People
The Water People
November 6, 2014
minute read

4 Stage Filtration Guarantees Protection For Your Safety

Stage 1 – Sediment pre-filter for mechanical filtration

A superfine polypropylene cartridge protects and extends the life of the membrane by removing sediment particles that are as fine as 5 microns (1 micron = 1/1000 of a mm) such as grit, dust, rust, mud and algae.

Stage 2 – Granular activated carbon pre-filter for membrane protection

A special high-grade class 1 filtration media carbon cartridge is added as a pre-filter to protect the TFC (thin filter composite) membrane from chlorine degradation. Service life of this pre-filter is 2500 US gallons/9,463 litres.

Stage 3 – Ultrafine RO membrane

With pore size less than 0.0005 micron the membrane effectively screens out micro-particles. It repels heavy metal complexes including aluminium, lead, mercury; micro organisms; colloidal matter and most cysts and virtually eliminates mineral ions including fluorides and sodium. This membrane has remarkable affinity for oxygen producing sparkling oxygenated water.

Stage 4 – Carbon polishing post filter

This provides the final polish to your drinking water. It ensures removal of unwanted odours and the creation of superb tasting water. This final filter acts as a final check against any organic impurities.

NSF Independently Certified

NSF Independently certified

The filter housing and fittings have been tested for performance to comply with NSF Standard 42 for taste, chlorine and odour reduction, and particulate reduction. The National Scientific Foundation is a trusted third-party not-for-profit testing organisation for product manufacturers that deliver, and treat, drinking water. A NSF mark tells customers as well as the regulatory community that your products are certified safer.

countertop 4 stage reverse osmosis purifier WP6000

Aquakleen Countertop Reverse Osmosis

The Aquakleen Countertop Reverse Osmosis water purifier is a superior 4 stage water purifier which provides the ultimate in drinking water quality. It delivers clean, clear drinking water as and when you want it. It is top quality USA made and comes in its own stylish case.
More Information

4 stage reverse osmosis purifier WP6004

Sierra Reverse Osmosis System

The Sierra 4 Stage Reverse Osmosis water purifier delivers litres of clean, clear drinking water from the convenience of the dedicated pure water faucet on the sink top. You have a choice of faucets to complement your existing kitchen tap. Reverse osmosis water is just so refreshing, great tasting and chemical free… remember how good tank water from our childhood used to taste?
More Information

Related articles