Personal eye-protection - Filters for welding and related techniques - Transmittance requirements and recommended utilisation

This Standard specifies the scale numbers and transmittance requirements for filters intended to protect operators performing work involving welding, braze-welding arc gouging and plasmajet cutting. The other applicable requirements for these types of filters are given in EN 166. Guidance on the selection and use of these filters are given in Annex A. The specifications for welding filters with switchable luminous transmittance and welding filters with dual luminous transmittanceare given in EN 379.