A 4-in-1 remineralization inline filter that reintroduces minerals and raises the pH of RO water to about 7.6–8.5 — the final stage for smoother-tasting purified water. Multi-media design. Fits 1/4″ and 3/8″ tubing.

What it does

This 4-in-1 remineralization filter restores minerals to reverse-osmosis water and gently raises its pH to approximately 7.6–8.5. RO water is very pure and low in minerals; this cartridge adds back soluble minerals like calcium, magnesium, potassium, and sodium, and improves taste and mouthfeel.

It uses a four-media blend: tourmaline, maifan stone, bioceramic (far-infrared) media, and alkaline/mineral media. Installed as the final stage after RO, it’s a taste-and-mineral enhancement step, not a contaminant filter.

Key benefits

• ✓Raises pH to ~7.6–8.5 and smooths the taste of RO water
• ✓Reintroduces soluble minerals — calcium, magnesium, potassium, sodium
• ✓Four-media blend — tourmaline, maifan stone, bioceramic, alkaline media
• ✓Final stage after reverse osmosis
• ✓~400-gallon service life (6–12 months)
• ✓Fits 1/4″ & 3/8″ tubing — adapters included

Adds / adjusts

Specifications

Installation & connection

• Install as the final (last) stage, after the RO membrane.
• Select your tubing size; the correct adapters are included.
• An optional 1/4″ T-fitting makes inline installation on an existing line easier.
• Push tubing into each adapter until seated.
• Replace every 6–12 months (~400 gallons).

Often used with