You must wear goggles for eye protection during every laboratory period, until all students have. completed all their experiments or finished cleaning up. Goggles will be furnished by the chemistry. department. Even if you wear prescription glasses or contact lenses, you need to wear goggles as well. 3. You may use your own goggles for eye protection. The goggles must be chemical splash goggles, have indirect vents, be marked ANSI Z87.1-1989, and must be approved by the instructor or lab. technician.