First developed in 1936, Lightning® latent print powders can be used on a wide variety of surfaces including glass, paint or varnish, some plastics, untreated metal, smooth untreated wood and wax. Noted for it's coal-black hue and its ability to adhere to the latent print, but not to the background surface. This is a heavy powder that will not float and "dust" the technician. "The Original" powder is recommended for all general dusting situations.