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BS EN 169-2002 pdf download.Personal eye-protection — Filters for welding and related techniques — Transmittance requirements and recommended use. This BS EN 169 specifies the scale numbers and transmittance requirements for filters intended to protect operators performing...

BS EN 167-2002 pdf download.Personal eye-protection Optical test methods. This BS EN 167 specifies optical test methods for eye-protectors, the requirements for which are contained in other ENs. Alternative methods may be used if shown to be...