This is for all people who like hiking, mountain climbing, visiting 3rd world countries or anywhere where you can’t find a clean tap or bottled water. Ultra Filtration Water Bottle is the triumph of the science. It eliminates all microbiological waterborne pathogens from water without chemicals. 1 filter can can treat up to 4,000 liters of water, 750 milliliters of water in just under a minute. You can then simply drink from it and water will be crystal clear. It was developed in response to natural disasters such as Hurricane Katrina and 2004’s tsunami and in response to the world’s increasingly threatened supply of clean, drinkable water.