Activated Filter media made from recycled green glass
What is AFM®?
AFM® stands for Activated Filter Media, a revolutionary filter material made from recycled green glass developed and manufactured by Dryden Aqua.
AFM® exceeds the performance of quartz and glass sand by filtering about 30 % more organics.
AFM® is bio-resistant and self-sterilising which means no biofilm is formed in the filter bed. This important feature makes the pool system healthier, ecological and more economical.
AFM® has successfully been used in over 100,000 public and private swimming pools worldwide.
AFM® is manufactured under ISO 9001-2008 standards and is a filter material certified under standards and is a filter material certified under Australian and European standards. standards for swimming pools and drinking water, NSF50 and NSF61.
AFM® is a registered trademark and is exclusively made by Dryden Aqua.
Your advantages at a glance
AFM® prevents biofilm – It attracts and captures bacteria and algae to prevent biofilm. Biofilm occurs when bacteria gathers in groups and will form a shield to protect themselves from chlorine. will form a shield to protect themselves from chlorine.
Over 90% of biofilm is inside your filter – Biofilm dramatically reduces the effectiveness of your filter resulting in poorer health in your filter environment or pool system water.
AFM® saves resources – Reduced maintenance and chemical consumption will save you time and money on chlorine and will save you time and money on chlorine and energy.
AFM® is successfully used in drinking water systems, filtration for cooling towers and in process water worldwide
Providing peace of mind for your family and their health.
AFM® The Clear Alternative
The chemistry of the glass, the particle shape and especially the activation process give AFM® these important properties to clearly outperform sand and glass sand filters. The large surface has a strong negative charge to adsorb organics and small particles. organics and small particles. The surface also has metal oxide catalysts which produce free radicals and thus a high redox potential. Therefore AFM® is self-disinfecting. AFM® prevents bacteria from settling to make it a unique, bio-resistant filter material.
How To Use AFM®
What is the recommended layering of AFM®?
If you are currently using sand or glass sand simply replace this in your filter with AFM®. While sand has a specific weight of 1,450 kg/m3, the specific weight of AFM® is 1,250 kg / m3, and therefore it needs about 20 % less AFM® according to weight. For example: If your filter has 150 kg of sand, only 125 kg of If your filter has 150 kg of sand, only 125 kg of AFM® is needed. AFM® is supplied in 20 kg bags and is available in four different grain sizes.
AFM® should be used as follows:
AFM® grain 0 = 0.25 to 0.5 mm grain size
AFM® grain 1 = 0.4 to 1.0 mm grain size
AFM® grain 2 = 1.0 to 2.0 mm grain size
AFM® grain 3 = 2.0 to 4.0 mm grain size
AFM® Grain 1 will remove more than 95 % of all particles in the water down to 4 microns. The best a very high quality sand or other glass and can achieve is 20 microns. At an efficiency of 95 %. AFM® 0 is able to remove particles down to 1 micron at an e remove particles down to 1 micron at an efficiency of more than 95 %. AFM® 0 has been developed for best filtration where flocculation cannot be used.
AFM® Grain 2 can be used for filters less than 1000 mm in diameter instead of grain 3. Also for all DIN filters with nozzle plate, grain 3 can be substituted with grain 2
If you are currently using sand or glass sand simply replace this in your filter with AFM®.
AFM® user manual
The particle shape of AFM® is controlled to maximise surface area and to minimise pressure differential and bed lensing effects.
Case Study – Bangladesh
In Dhaka, Bangladeshis, the textile Industry makes up 80% of the economy and is responsible for most of the pollution, 100% of surface water and 90% of ground water contaminated. See how fine bubble aeration and AFM® filtration can turn everything around.
Textile Industry in bangladesh – case study