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6th Stage Alkaline Remineralization Filter

The RO membrane removes not only harmful pollutants but also most healthy minerals. As a result, a standard 5 stage RO system produces slightly acidic water with a pH of 7.0 or less.

As the 6th stage Alkaline Remineralization filter, iSpring alkaline filter (FA15) restores healthy minerals and produces a balanced alkalinity, giving the water a better taste. It uses all natural mineral stones as the filtration media and never sacrifices quality for quantity.

It can last up to 6-12 months depending on your source water and usage.

Post Carbon Filter

Activated Carbon filters can trap and absorb organic chemicals and chlorine from the water effectively with its ability of mechanical filtration and physical adsorption. It can efficiently remove odors and improve the water taste.

iSpring 5th Stage Post Carbon filter (FT15) works as the final stage in the RO system to capture any particles that may have accumulated inside the tank before pure water is delivered to the faucet. It can last up to 12 months depending on your source water and usage.

1st Stage

2nd Stage

3rd Stage

5th Stage



Sediment Filter	✓	✓	✓
Granular Activated Carbon Filter	✓	✓	✓
Carbon Block Filter	✓	✓	✓
Post Carbon Filter	✓	✓	✓
Alkaline Remineralization Filter	✓	✓	✓
75 GPD RO Membrane		✓	✓

On Apr 19, 2022 at 11:35:25 PDT, seller added the following information: