What Does Z87 Mean on Safety Glasses?
What Does Z87 Mean on Safety Glasses?
In the united states, ANSI and OSHA are government agencies that make and apply safety rules and regulation for a workplace. People require safety glasses in any applications where eyes are at most risks. Safety glasses contain frames and lenses. These safety spectacles are stronger than dress eyewear and cannot easily bend or break. 3M safety glasses are also made according to safety standards.
Basically, polycarbonate material is used in safety glasses lens that is too strong even cannot shoot with a bullet. The current safety eyewear standard according to ANSI is Z87.1-2010. So according to new safety standards, all safety eyewear should follow the + sign for manufacturing making if the lens and frames are impact rated. If any eyewear lenses or frames don’t follow this sign, they are not impact rated. Hudson safety glasses have also marked these sign over their optical.
All prescription safety eyeglasses marking this sign on the upper or outer of the lens. Non-prescription eyewear mark this sign on the upper or middle edge of the lens. These marks should be permanent. Safety glasses with the tinted lens are marked with V for photochromic lens and S for special purpose tinted lens.
Another marking of tinted safety glasses contains,
- U and scale number for a UV filter
- W, and shade numbers for welding purpose
- L for a visible light filter
- R for IR filter
