NduR Radiological 28-Ounce and 38-Ounce Replacement Filter Quality material used to make all Pro force products Tested in the field and used in the toughest environments 100 percent designed in the USA Removes up to 99.99% of radiological contaminants such as: Gross Beta, Uranium, Plutonium, Radon, Radium, Cesium, Radioactive Iodine Ideal for those traveling abroad Removes up to 99.99% of: Virus, Bacteria and E-Coli Removes up to 99.99% of: Chromium 6, Chlorine, Lead, Mercury, Cadmium, Aluminum and Copper Removes up to 99.99% of Micro-organisms, such as Giada and Cryptosporidium