Field of vision checks on lenses, visors and protective masks EN 168 – EN 174 Field of vision checks on lenses, visors and protective masks ISO 18526-3 High-speed by Standard EN 168 – ANSI Z87 Drop test – penetration by Standard ANSI Z87 – EN 168 – ISO 12311 Dust Test EN 168 Against gas – fine particles EN 168 Ignition ANSI Z87 – EN 168