The Chlor-Floc Water Purification packets will clarify and disinfect naturally polluted water. This box is enough to treat 30 liters (33 quarts) of polluted water. One 600 mg packet provides 1.4% available chlorine and fluctuating agents for clarification and disinfection of 1 liter of water from polluted sources at temperatures of 77 degrees Fahrenheit. At colder temperatures, two packets are recommended. Eliminates: Giardia, most bacteria, viruses, and other harmful microorganisms. Package of 30 tablets per unit.