Air duster keyboard cleaner provided by our manufacturer and supplier can remove dirt and microscopic debris from hard to reach areas of home and office equipment. So this blow off air duster is ozone safe. Air duster spray is used to blast out dust and dirt from keyboards, computer vents, and even in the PCB assembly process by opening up tight stencil apertures. The compressed air dusters from our factory in China are duster products specifically for the removal of dust from photographic negatives, semiconductor chips, and specimens under electronic microscopes of for use on energized electrical equipment.