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History of Pulsed Light for Sterilization

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Bedford (1927) and Gates (1929) were among the first to scientifically quantified the bactericidal action of UV. Today, UV light performed by mercury lamps at 254 nm is a well-established sterilization technique for surfaces and water [1]. However, the ability of some microorganisms to repair the DNA damage caused by UV light at low doses was a first limit of the mercury lamp. Secondly, if mercury bulbs break, dangerous mercury vapor may be released.

The alternative ? A lamp filled with inert gas, able to generate intense short pulse of UV light...