A method of rendering material aseptic.

摘要

A method of rendering aseptic the interior surface of a polyethylene-coated aluminium or paperboard packaging carton comprises spraying into the cartons water or H2O2 to provide a layer of water or H2O2 about 2 mu thick and then irradiating the interior surface with ultraviolet radiation to give a dosage of at least 5 mW sec./cm<2>, the water or H2O2 and the radiation having a synergistic sterilizing effect.