What is AFM®?
- AFM® is the best filter material available on the market with a certified 1-micron filtration rate.
- AFM® is 100% bio-resistant: It prevents bacterial growth within the filter bed.
- AFM® is a sustainable product made from recycled glass. Unlike glass sand, only green and brown glass is used, as the white glass found in glass sand does not contain the metal oxides necessary for its activation. Green and brown glass carries a charge that increases significantly during activation.



