Get the added viral protection thats critical in popular wilderness areas and developing countries with this comprehensive purifiermicrofilter system. The SweetWater Microfilter removes waterborne bacteria and protozoa, particulate, taste and odors, while the chlorine based SweetWater Purifier Solution effectively inactivates viruses. Together they provide the most reliable water possible. It pumps easily with a 4:1 mechanical advantage, producing 1L per minute and can easily be cleaned in the field without tools to restore flow rates. This system meets U.S. EPA requirements for microbiological water purifiers.