Granulated Active Carbon (GAC/UDF) Filter
Granular Active Carbon (also referred to as UDF by some manufacturers and retailers) is carbon that has been treated with oxygen to make it porous, but it has also been broken up into granules to further increase the surface area for chemical bondage to occur.
The water passes through the GAC filter, allowing the organic materials and chlorine to effectively bond with the carbon molecules, thus removing these from the water.
Many carbons preferentially adsorb small molecules. Iodine number is the most fundamental parameter used to characterize activated carbon performance. It is a measure of activity level (higher number indicates a higher degree of activation) often reported in mg/g (typical range 300–1200 mg/g). It is a measure of the micropore content of the activated carbon (0 to 20 Å, or up to 2 nm) by adsorption of iodine from solution. It is equivalent to the surface area of carbon between 900 and 1100 m2/g. So essentially the greater the Iodine Number Rating on an Activated Carbon Block, the more effectively the carbon will absorb things such as chlorine and organic molecules.
The GAC's outer plastic shell can vary in color and design, depending on the manufacturer and batch. However, the internal carbon media is the same across the board. Please keep this in mind when receiving your order of GACs.
Please Note that the lead time for Box orders can range from 2 to 3 working days from when payment is received before the order will be ready for collection or shipping with Couriers.
Dimensions of Filter Cartridges
