The technology used in Nanalum was developed by NASA as a way to reuse waste water on the International Space Station. Nanalum works through electro-absorption and is manufactured with non-woven highly engineered water filter paper which is also impregnated with Granular Activated Carbon (GAC). The Nanalum module has a strong positive electrostatic charge when wet. Like a strong magnet, the positive electrostatic charge of the Nanalum attracts and traps organic contaminants. Filters: Viruses (Hepatitis A, Hepatitis E, Poliovirus, Meningitis, etc), Bacteria (E. Coli, Cholera, Typhoid, etc), Protozoa (Cryptosporidium), Parasites (Giardia), Heavy Metals, Chemicals, Negative taste. Filters up to 90 gallons. Hang packaged.