High velocity impact safety glass test method is performed by shooting a 1/4" steel ball at a speed of 150 feet per second aimed at the center of the lens. The result is a Pass or Fail which determines that a lens must not chip, break, or crack and it must maintain its original position in the frame.
WARNING:
This product may not provide sufficient filter
for your specific brazing, torching, or welding
application(s). Make certain you select the
correct filter before starting your project. For
assistance consult ANSI/ISEA Z87.1 Eye and
Face Protector Selection Guide found on
safetyeqipment.org .