Carbon Block/Alumina Activated Fluoride & Arsenic Reduction (2 Stage Filtration System) Counter Top. Easy connect to your faucet
DUAL COUNTER TOP FILTRATION.
- 1 CARBON BLOCK WATER FILTER
- 1 FLUORIDE REDUCTION WATER FILTER (ACTIVATED ALUMINA)
Activated alumina is also widely used to remove fluoride from drinking water. In the US, there are widespread programs to fluoridate drinking water. Activated alumina filters can easily reduce fluoride levels from .5 ppm to less than .1 ppm. The amount of fluoride leached from the water being filtered depends on how long the water is actually touching the alumina filter media. Basically, the more alumina in the filter, the less fluoride will be in the final, filtered water. Lower temperature water, and lower pH water (acidic water) are filtered more effectively too. Activated alumina is manufactured from aluminium hydroxide by de-hydroxylating it in a way that produces a highly porous material, this material has a surface area significantly over 200 square meters/g. The compound is used as a desiccant (to keep things dry by absorbing water from the air) and as a filter of fluoride, arsenic and selenium in drinking water. It has a very high surface-area-to-weight ratio, due to the many "tunnel like" pores that it has.
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