AFM Glass Filter Media

AFM® (Activated Filter Media) is a bio-resistant filtration material made out of brown and green glass.

That means:

• No clusters or channelling and therefore continuous good filtration performance over many years
• Less problems with Legionella- , Pseudomonas or cryptosporidium
• Less chlorine smell, because 50% less Trichloramine and 50% less THM's (Trihalogenmethane) are created

Why is AFM® a Unique Glass Filter Media?

Thanks to the high negative charge AFM® also filtrates electrostatically and reaches a filtration sharpness of up to 4 micron at low filtration speeds.

What Makes AFM® So Effective?

1. CLEAN GREEN AND BROWN GLASS

The raw material used for AFM® has to have a very specific glass quality. AFM® is only made from pure green and brown glass, the only glass that has the necessary chemical and physical properties to make AFM® self-sterilising.

2. IDEAL HYDRAULIC PROPERTIES

The raw material is broken into the optimal grain size and grain shape. The correct shape is crucial for the outstanding hydraulic characteristics of AFM®. Balls (glass beads or pearls) as well as plates are not suitable for clean water applications. For security reasons, no dangerous glass splinters are allowed to be present in the filter material. Our ISO certified manufacturing process ensures that AFM fully complies.

3. ACTIVATION PROCESS

Typically crushed glass or sand has a surface area of 3'000 m² per m³ but activated AFM® has a surface area of over 1'000'000 m² per m³ which is over 300 times greater surface area for adsorption and catalytic reactions. Hydroxyl groups on the surface give AFM® a strong negative charge that attracts heavy metals and organic molecules. In the presence of oxygen or oxidising agents the catalytic surface generates free radicals that oxidise pollutants and disinfects the surface of AFM®.