Mechanical risk - Low energy impac. Low energy impact, resists a 6 mm, 0.86 g ball at 45 m/s
Mechanical risk - Medium energy impact. Medium energy impact, resists a 6 mm, 0.86 g ball at 120 m/s
Mechanical risk- High speed particles at extreme temperatures. The letter T, immediately after the mechanical strength symbol, authorises use for high speed particles at extreme temperatures.
Chemical risk 3 - Chemical protection against liquid droplets or splashes. Goggles, adapted spectacles with strap or face shield mandatory.Chemical risk 4 - Chemical protection against large dust particles> 5 microns. Goggles mandatory
Optical class - Continuous work - Worn permanently.