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UV lights in air con can help halt swine flu spread

Air conditioning operators can help to stop the spread of swine flu by installing high tech UV lights in their HVAC systems, according to American UV specialist Steril-Aire.

The firm, says that conventional operation of climate control will typically re-circulate approximately 80 per cent of the building air, redistributing viruses around the building.

UK distributor e-co says that viruses too small to be trapped by a filter, such as H1N1or swine flu can be killed by using Ultraviolet C Germicidal Irradiation (UVGI) in the air handling system.

The firm quotes US Environmental Protection Agency tests which showed that Steril-Aire UVGI removed 96 to 99.9 per cent of pathogens in a single pass of the air past the lamp. It adds that UVGI is now mandated by the US and Chinese Governments in all of their buildings.

E-co adds that there is now technology which turn the building air itself into a natural ‘disinfectant,’ generating hydroxyls and ‘friendly oxidisers’ which are safe, natural and are very efficient at killing viruses and bacteria at the source. For example, in laboratory testing, they killed 78 per cent of the microbes within three feet during a simulated sneeze test.