Siemens Water Technologies offers a variety of filter bag replacements and housings to meet specific configurations and filtration needs. Our activated carbon cartridge filter consists of lignite-based granular activated carbon in an upflow cartridge design for removing chlorine feed water. The cartridge is designed to allow water to enter the bottom of the cartridge, then filter through the entire carbon bed before exiting at the top. This design maximizes the contact time of the water with the activated carbon and thereby improves adsorption.