Norwich Union and Surrey University Tests On Negative Ions
In a major 16-week trial conducted by Surrey University at the Norwich Union Insurance Group's headquarters, eight negative ion generators were fitted in the computer and data preparation section, the typing area and the motor underwriting department. Before the tests got under way, the University team spent a month compiling incidence rates of complaints of sickness and headaches.
The experiments were "double- blind"-so that neither the staff nor the researchers knew whether the ionisers were on or off at any given time. The most dramatic results were in the air-conditioned areas, the incidence of headaches in the computer room being reduced by 78 per cent during the midnight to 08.30 shift. Norwich Union was sufficiently convinced to decide to keep the ionisers, and order another ten ceiling-mounted models, giving them 20,000 sq ft of ionised office space
Part of Surrey University's experiments concerned concentration ability and the studies showed that negative ionisation could improve task performance by as much as 28 per cent. In general, the more difficult the task, the more improvement could be accomplished by negative ions.
Part of Surrey University's experiments concerned concentration ability and the studies showed that negative ionisation could improve task performance by as much as 28 per cent. In general, the more difficult the task, the more improvement could be accomplished.
