Abstract: A container is provided for use in storing evidence while reducing exposure of the evidence to airborne contaminants. The container includes an inner lidded box to enclose the evidence, and an outer lidded box to enclose the inner box. Each box includes at least one wall with a ventilation opening, with the walls with ventilation openings being separated by a given distance. An air filter is positioned between the walls with ventilation openings, so that air entering the inner box must pass through the ventilation openings and the filter, thereby minimizing the entry of airborne contaminants into the inner box.