![]() ![]() Far smaller than protozoa or bacteria, viruses slip through the technologies used in backpacking filters. Why the two treatment device options? The reason is, viruses are just too small for filters to catch. In contrast, a "purifier" can employ a variety of methods to do so, from physically removing the contaminants to disinfecting the water of them, through UV or chemical treatments. In these areas, such as in developing countries, a purifier is recommended.Īdditionally, filters physically remove matter and microbes from the water. In places heavily trafficked by humans or where sanitation systems are poor, the risk for viruses increases. A water purifier is designed to combat all three classes of microbes, including viruses.īecause North American backcountries are regarded as low-risk for viruses, filters typically offer a sufficient water treatment method. Generally speaking, a water filter is designed to remove waterborne protozoa and bacteria, but not viruses. The main difference lies in the level of protection they provide. ![]()
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