Things you should know before purchasing a water filter: part 7

Granular Activated Carbon (GAC) vs Activated Carbon Block Filters

GAC filters are made up of finely crushed carbon that are loosely packed together within a container. Activated Carbon Block Filters are made from carbon dust that are packed together under pressure.

Carbon Block Filters are better at removing impurities from the water then GAC filters, due to the fact that the time in which water is in contact with the filter is longer for Carbon Block Filters, although GAC filters are able to filter more water in a shorter amount of time, even if the level of filtration is lower than that of Carbon Block Filters.

"Which one to choose?"

คWhether you choose the GAC filter or the Carbon Block depends on the initial water quality that is being supplied and the level of purity that you want to achieve. For example, even though Carbon Block Filters are better at removing impurities, for household uses, GAC filters might be better due to the fact that they filter more water in a shorter amount of time.

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