Welding Safety Glasses help protect welders against Photokeratitis, also known as "welder's flash." Welding Safety Glasses are designed with Shade 3 or Shade 5 Lenses and are primarily used for torch soldering, brazing and cutting. Welding Safety Glasses are not intended for arc welding, which requires a darker lens found in Welding Helmets (OSHA's 29 CFR 1910.252 lists the minimum lens shade requirements for a variety of welding operations).
Visible Light Transmission for each lens shade: Shade 2 = 20-28%, Shade 3 = 10-14%, Shade 5 = 2-4%
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