This BPA free filtration bottle is great for emergencies or to just take with you to enjoy fresh water anywhere! This bottle can filter up to 100 gallons of water. That is 620 fills. Removes 99.99% of pollutants from water. Features: Removes up to 99.99% of pollutants and contaminants found in drinking water sources using its proprietary Ionic Adsorption Micron Filtration System. Produces up to 100 gallons of filtered water. The top cap has a soft plastic removable cover for the drinking soup which keeps it free of dirt and contamination. 24 oz size is compact, light weight and easy to use. Tested by independent laboratories using EPA and NSF protocols .