Edmund Optics Lens Tissue - Industrial Grade is ultra-lightweight, porous, soft, and has an anti-tarnish medium. Use for dry cleaning or with an alcohol-based solution to polish the surface of mirrors, optical parts, coated metals, and glass. Edmund Optics Lens Tissue - Industrial Grade is also ideal for wiping coated primary mirrors free of particulates prior to laser scanning. The tissues meet Type 1, Class 1, Physical and Chemical Properties, MIL Spec A-A-50177. Available in 500 sheet packages.