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Shining a light on UV light boxes for sterilising

Laurence Weir at relates COVID-19 has put the spotlight on cleaning and sterilising as never before with ideas ranging from the practical to the ’imaginative’. One of the techniques that has been explored is the use of ultraviolet light. Ultraviolet germicidal irradiation (UVGI) is an accepted disinfection method that uses short-wavelength ultraviolet (UV-C) light to kill or inactivate viruses by disrupting their nucleic acid strands, leaving them unable to perform vital biological functions. In principle, UVGI devices can produce strong enough UV-C light to disinfect air in a circulating confined area. Therefore, the effectiveness of UVGI depends on…
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