Description
When fluoride levels in the water are too high, a standard carbon filter will not make a difference. Activated alumina media is a specialised granular material designed to cut fluoride by up to 98% and reduce arsenic by around 90%. It works through adsorption, locking contaminants onto its surface as the water flows through. Sold in 1kg portions, it is the refill media commonly used inside dedicated fluoride reduction cartridges and tanks.
Key Features
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Removes up to 98% of fluoride from drinking water when used in the right filter housing.
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Reduces arsenic by up to 90%, making it useful for bore and well water treatment.
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Works through adsorption, a proven process for trapping contaminants on the media surface.
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Supplied in 1kg bags for easy handling and refill into compatible housings.
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Stable across a pH range of 5 to 9, with an operating temperature range from 5°C to 80°C.
Where to Use It
Activated alumina is most often used in cartridge filters or larger refillable tanks where fluoride or arsenic levels are a concern. It is suitable for mains water supplies that contain added fluoride, and for bore or well water where arsenic is naturally present. It is not designed for simple jug filters or under-bench carbon-only systems, as the media requires correct contact time and housing design to work effectively.
Technical Details
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Media structure: Acidified granular aluminium oxide.
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Functional groups: Oxide (hydroxyl).
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Physical form: White grains.
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pH range stability: 5–9.
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Operating temperature range: 5–80°C.
Appearance
White granular media is supplied loose in 1kg bags, ready to be filled into compatible fluoride or arsenic reduction cartridges.
Pro Tip
Always flush the filter housing with fresh water after refilling with activated alumina media. This clears fine dust from the grains and prevents cloudy water in the first few litres.
FAQs
1. How much fluoride does activated alumina remove?
When used correctly, it can reduce fluoride levels by up to 98%.
2. Will it also reduce arsenic?
Yes, it can reduce arsenic by up to 90%, making it useful for some bore and well water supplies.
3. How much media comes in one order?
It is sold in 1kg bags, which can be used to refill compatible filter cartridges or tanks.
4. How often should I replace the media?
Replacement depends on water quality and usage, but most setups require fresh media every 6–12 months.
5. Can I use this in a standard carbon cartridge housing?
No. It requires a housing designed for granular media so that water flow and contact time are correct.