This water filtration system has a new cartridge called “Red-D Ultra Protector”, with a deep submicron filtration. The “Red-D Ultra Protector removes or reduces heavy metals, organic or inorganic chemicals and pathogens, some of them: 99.99 % Virus, 99.99 % Bacteria, 99.99 % Cystst, 95.00 % Lead, 95.00 % Arcenic, 95.00 % Cadmium, 85.00 % Chrome, 60.00 % Mercury, Cloro, VOC, PCB…and much more… TESTED BY A CERTIFIED LABORATORY in USA – 0.02 Micron filter