
Remineralization Stage
Pure Alkaline Filter
Puts the minerals back after RO
Reverse osmosis is thorough enough to strip beneficial minerals along with the contaminants. This stage adds calcium and magnesium back in, which is what stops RO water tasting flat.
NSF-certified mediaPairs with any RO system

Key specifications
| Type | Inline remineralization cartridge |
|---|---|
| Function | Restores calcium and magnesium removed by RO |
| Installs | Inline, after the RO membrane |
| Pairs with | HW800 AlkaPro (built in) or the 5-stage tank RO |
| Filter changes | Simple cartridge replacement |
Warranty
| Media warranty | 5 years |
|---|---|
| Labor warranty | 1 year from date of purchase |
What it adds back
- Calcium
- Magnesium
- A noticeably fuller taste in water, coffee and tea
- Balanced pH rather than flat, stripped water