These pre-moistened, ammonia-free wipes leave glass thoroughly clean, lint and streak-free. They are ideal for photo exposure units. Can also be used on plexiglass, stainless steel, aluminum, plastics, mirrors, acrylics and polycarbonates surfaces. Non-toxic, Non-Flammable, Non-hazardous. Wipe will NOT scratch surfaces or leave lint. Wipe and throw away. Keep these next to the vacuum frame and scanner.