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What Is Reverse Osmosis?
Reverse osmosis works by having a high water pressure on the incoming supply side of a semi-permeable membrane within the water filter. This causes the water molecules to pass through the membrane leaving behind salts and other contaminants that were in the water and resulting in purer water on the resevoir/tap side with the rejected water containing the impurities being discharged in to the drain.
A properly functioning RO system will normally achieve a reduction of between 94-99% depending on the impurities concerned (see below).
[The capacity of the membrane is expressed as GPD which means Gallons Per Day]
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Example o Typical Removal Rates:
Typical Reverse osmosis installation:
|BETTER TASTING WATER||MONEY SAVING||EASE OF MAINTENANCE||PEACE OF MIND|
In combination with carbon filters, the removal of chemicals such as chlorine means you'll experience much better tasting water & you'll probably find yourself drinking more of it!
Enjoy the benefits of pure water directly from your kitchen tap. No need to buy expensive bottled water of questionable quality
Only normally require a filter change between 9-12 months which can be easily done by anyone. Replacement filters are readily available and very economical
With a huge range of contaminants being removed, knowing that you and your family are benefiting from pure, safe, healthy water at all times is priceless.
A concern that is sometimes raised over reverse osmosis water filtration is that this method also results in the beneficial minerals such as calcium & magnesium being removed along with the undesirable elements. There is considerable debate as to how important an issue this is with claims varying from it being a major health concern to being of no consequence. In response to this issue many reverse osmosis systems on the market now include alkaline re-mineralising filters which ensure that any beneficial compounds removed in the purification process are replenished, giving you the best of both worlds and the best tasting, healthiest water possible.
Most RO systems offered for sale will include a tank which is located under the counter and holds the purified water until required. There are some reverse osmosis filters however which are known as 'direct flow' which have the capacity to, as the name suggests, provide a direct flow of purified water from the filter unit to the tap. The main benefit of such systems over the standard type is fresher water and space saving as they do away completely with the need for a storage tank. Such systems include the excellent 9 stage BMB NOVA-Pro and the sleek, compact Osmio D7 For more on Direct Flow tankless systems see here.
For those who want enjoy the advantages of reverse osmosis but are regularly on the move, in rented accomodation or don't want to be bothered plumbing in a RO system there is now the option of the countertop Osmio Zero Installation Reverse Osmosis Water Filter requiring nothing but an electrical socket. This innovative and stylish kitchen worktop RO filter will supply ambient, warm, hot & boiling purified water at the touch of a button and can completely replace the kettle.
Another factor to consider is your home's water pressure ~