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Current IssueSeptember 01, 2014
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May 2005: Volume 47, Number 5

Ultraviolet Water Disinfection -- It’s All About the Dose
by Rick Andrew

Mercury lamps have a very strong ultraviolet (UV) emission at the 254 nanometer (nm) wavelength. Energy at this wavelength is very effective at disrupting ribonucleic acid recombination in microorganisms, which renders them unable to reproduce. When these microorganisms are unable to reproduce, they are effectively prevented from causing illness to those who may inadvertently consume them—the microorganisms are inactivated...

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