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P444.60
Personal eye protection — Filters for welding and related techniques — Transmittance requirements
and recommended use
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This European Standard specifies the scale numbers and transmittance requirements for filters intended to protect operators performing work involving welding, braze-welding, air-arc gouging and plasma jet cutting. It also includes requirements for welding filters with dual scale numbers. The other applicable requirements for these types of filters are given in EN 166. The requirements for the
frames/mountings to which they are intended to be fitted are given in EN 175. Guidance on the selection and use of these filters are given in Annex A.
The specifications for welding filters with switchable luminous transmittance are given in EN 379.