iSpring F28K75 3-Year Replacement Supply Set for 6-Stage Reverse Osmosis RO Water Filtration Systems with Alkaline Mineral Filter, 28 Piece, White;

The F28K75 3-year filter pack comes with a total of 28 replacement filters so the filters can be changed on schedule for 3 years.

6x 5 Micron 10" Sediment Filters (1st Stage, #FP15): Removes dirt, rust, sand, and other particles. Replace approximately every 6 months.

6x 5 Micron 10" Granular Activated Carbon (GAC) Filters (2nd Stage, #FG15): Absorbs chlorine, halide, organic contaminants, odors, and other impurities that contribute to bad tastes and odors. Replace approximately every 6 months.

6x 5 Micron 10" CTO Carbon Block Filters (3rd Stage, #FC15): Further removes any remaining chlorine, tastes, and odors. Replace approximately every 6 months.

1x High Rejection .0001 Micron TFC Reverse Osmosis Membrane (4th Stage, #MC7): The heart of the RO system. Produces drinking water at a rate of 75 gallons per day. Replace approximately every 2-3 years.

3x Post Carbon Inline Filters (5th Stage, #FT15): Polishes the water from the tank before it is delivered to the faucet. Replace approximately every 12 months.

6x Alkaline pH Remineralization Filters (6th Stage, #FA15): Adds 0.5 - 0.8 PH back to the water. Also adds back healthy minerals such as ionized calcium, magnesium, sodium, and potassium which were removed during the RO process. Replace approximately every 6 months.

This filter pack fits the iSpring RCC7AK, RCC7P-AK, and most other RO systems that use standard sized filter housings including Flowmatic, PuROLine, Crystal Quest, and Apec.