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The Z87+(plano lens) and Z87-2+(Rx lens) markings on safety glasses and goggles indicate that eyewear is compliant with ANSI Z87.1 High Impact and ANSI/ISEA Z87.1 industrial safety standard for eye protection. Safety eyewear meeting these criteria are used in a variety of industrial and personal applications.
Safety glasses (spectacles) are commonly used as protection against impact and optical radiation. Tinted safety glasses used in torch soldering must have a shade number (1.5-3) on the lens, but do not provide adequate protection for gas or arc welding which need shades 4 or higher.