Atlantis Water Purifier Cup System used by NASA on all Space Shuttle flights and the Space Station. Purifies 3700 liters of water Killing virus, bacteria and protozoa, enough for a person for drinking and cooking for a year! On demand purification with 10 years shelf life! Kills virus, bacteria and protozoa Earthquakes, Floods, Bioterrorism, Pandemic, Protect your water from disaster!