... bag , Turns rain,lake,river and tap water into drinkable water immediately!Ideal for hiking,camping,fishing,hunting,climbing, ... (Patent No. ZL200510033632.9)· Entirely removes bacteria in water like Escherichia coli, Staphylococcus aureus, Salmonella typhi, Vibrio cholerae ... from the output hose. 7) After filling water container with filtered water or meeting your requirement, stop squeezing the bulb ...