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Food Environ Virol. 2013 Jun;5(2):87-90. doi: 10.1007/s12560-013-9103-7. Epub 2013 Jan 29.

Assessment of a portable handheld UV light device for the disinfection of viruses and bacteria in water.

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  • 1Environmental Virology Laboratory, Department of Water Pollution Research, National Research Centre, Cairo, Egypt.


Effective individual microbiological water purifiers are needed for consumption of untreated water sources by campers, emergency use, military, and in developing counties. A handheld UV light device was tested to assess if it could meet the virus reduction requirements established by the United State Environmental Protection Agency, National Science Foundation and the World Health Organization. The device was found capable of inactivating at least 4 log₁₀ of poliovirus type 1, rotavirus SA-11 and MS-2 virus in 500 mL volumes of general case test water. But in the presence of high turbidity and organic matter, filtration was necessary to achieve a 4 log₁₀ reduction of the test viruses.

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