Should I use an engineer to replace my carbon filters? Pre- filters are recommended for use with carbon and HEPA filters to avoid larger particles being pulled into the main filter and restricting filtration which will reduce the filters lifetime. Some people rely on smell, but it is advised to follow manufacturers guidelines and change filters before or at suggested filter lifetime. It depends on usage and concentration of contaminants. There is no perfect method to determine when a carbon filter is saturated. How do I know when my carbon filter needs changing? When chemicals pass next to the carbon particle, they attach to the surface and are trapped. The huge surface area of activated charcoal gives it count- less bonding sites. In addition to standard activated carbon, Absolute Carbon Filters supply a range of impregnated activated carbons optimised for the adsorption of acids, ammonia, amines, sulphur compounds, formaldehyde, mercury and other compounds. What is activated carbon?Īctivated carbon, also called activated charcoal or activated coal, is a form of carbon that has been oxidised to make it extremely porous and thus have a large surface area available for adsorption. Generally, block filters are used to remove a larger number of contaminants, based upon the increased surface area of carbon. There are two main types of carbon filters: powdered block filters and granular activated filters. Are there different types of carbon filters? Carbon filtering is a method of filtering fumes and vapours in the air, using activated carbon to remove contaminants and impurities, via chemical adsorption.

Carbon filters