... fishing,hunting,survival,military Turn rain, lake, and river water into drinkable water immediately!Ideal for: Hiking, Fishing, Hunting, Survival, ... not only for clear but also for very cloudy water; can be used after cleaning (not a disposable filters)· ... (Patent No. ZL200510033632.9)· Entirely removes bacteria in water like Escherichia coli, Staphylococcus aureus, Salmonella typhi, Vibrio cholerae ...