“Wear eye protection, e.g., (spectacle type) safety glasses with side shields (meeting basic impact resistance of ANSI Z87.1), face shields, chemical splash goggle, or other safety eyewear appropriate to the type and level of hazard. Do not consider face shields or safety glasses to provide sufficient protection against unbound, dry materials that could become airborne.”1
1. U.S. Department of Energy, Nanoscale Science Research Centers, “Approach to Nanomaterial ES&H,” 10 (Rev. 3a May 12, 2008).