Activated carbon filter cartridge is widely used in water filter. For example, RO system has five stage filtration system. The five stage of filter cartridge most widely used are PP, GAC, CTO, RO membrane and post activated carbon. It can be seen that there are three kinds of activated carbon filter cartridge in these five grades, so what are the differences and functions of GAC & CTO & post carbon filter cartridge?

GAC is usually made from coconut shell, fruit shell and coal by special process. Its appearance is black amorphous particles with pore structure and good adsorption performance. It is used in the purification of gas and liquid.

GAC filter cartridge integrates adsorption, filtration, interception and catalysis, which can effectively remove chemical pollution caused by pesticides, pesticide residues, organic solvents and other industries. It can also effectively remove the organic matter, residual chlorine and other radioactive substances in the water, and has the effect of decolorization and deodorization.

CTO is made by mixing granular activated carbon powder and inorganic liquid binder, pouring into a special mold, using a press to compress under high pressure, and drying after leaving the mold.

In the water filter, the CTO filter cartridge can deeply absorb the color, peculiar smell and residual chlorine in the water, and filter out the fine impurities. It is used in the third stage of water filter and also plays the role of protecting RO membrane.

The post activated carbon is a new type of deep filter media, which is made up of high-quality coconut shell activated carbon with low hot-melt adhesive. Part of the high-quality activated carbon filter materials were made after silver treatment, silver atoms can be bactericidal and antibacterial.

As the last process of the water filter, the post activated carbon filter cartridge can further absorb the peculiar smell of the water, increase the oxygen content of the purified water, and mainly improve the taste of the water. Especially for the water filter using the pressure water storage barrel, the post activated carbon can effectively absorb the peculiar smell produced by the water storage barrel.
(Source:http://www.waterfiltersfactory.com/news/gac-cto-post-carbon-filter-cartridge.html)