How does the MINA Fluoride Filter remove fluoride?

The MINA Fluoride Filter uses a granular aluminum oxide-based adsorbent to remove 99% of fluoride from drinking water.

This filter media works through a process called adsorption. Adsorption happens when molecules or ions in water are attracted to and held on the surface of a solid material. In the MINA Fluoride Filter, the aluminum oxide-based media has a high surface area, giving fluoride ions more places to attach as water passes through the filter.

Think of it like a highly textured surface inside the filter. As water flows through, fluoride ions come into contact with the filter media and bind to its surface. This helps lower the amount of fluoride in the finished water.

In short: the MINA Fluoride Filter reduces fluoride using a granular aluminum oxide-based adsorbent, and it works by adsorption — attracting and holding fluoride ions on the surface of the filter media as water passes through. 

How is this different from carbon filtration?

This is different from basic carbon filtration. While activated carbon is effective for many common water concerns, fluoride requires more specialized media because it exists in water as a small dissolved ion. That’s why Santevia uses aluminum oxide-based adsorbent media in the MINA Fluoride Filter specifically for fluoride reduction.

Does the aluminum oxide end up in the filtered water?

No — the aluminum oxide-based media is the solid filter material inside the MINA Fluoride Filter. It is not added to the water and it does not work by dissolving into the water. Instead, water passes over the media, and fluoride ions are attracted to and held on the surface of the media through adsorption. The filter media stays contained inside the filter, while the filtered water flows through.