What are the radiation protection standards?
EN170 ULTRAVIOLET RADIATION
European standard EN170 specifies the scale numbers and requirements relative to the transmission factor of filters protecting against ultraviolet radiation/sources of artificial light. The protection filters specified in this standard are not suitable for looking directly at bright light sources such as high-pressure xenon arc lamps or looking directly or indirectly at electric welding arcs. In this case a welding filter must be used as specified in standard EN169 with a scale number suitable for the light source.
EN171 INFRARED RADIATION
This European standard specifies the scale numbers and requirements relative to the transmission factor of filters protecting against infrared radiation.
EN172 SOLAR FILTERS FOR USE IN THE WORKPLACE
EN172 defines the scales and requirements of the corresponding transmission factor for solar filters for industrial use/natural light sources.