The experiment

The demonstration

Professor William Keevil, microbiological researcher and Head of Environmental Research at the University of Southampton, conducted an experiment in which a small amount of liquid containing between 1 – 10 million bacteria (MSRA culture) was placed on both a copper coupon and a stainless steel coupon.

As the culture – stained with a green fluorescent dye to make it visible under a microscope – died off, the fluorescence will diminished. The rate of diminishing fluorescence was a measure of the antimicrobial power of the surface on which it was placed. Little or no fade meant that the surface had little or no antimicrobial activity; a rapid fade is proof of powerful antimicrobial potency. Once a minute for quarter of an hour, an image of the cultures was taken to display the experiment’s evolution. Learn more
“Studies have repeatedly shown copper to be an effective antimicrobial material, and support its use in public places to reduce the spread of infection.” Dr. Keevil