Glasses must be worn at all times when you are
in the laboratory (unless a higher degree of protection is required).
Impact Glasses offer adequate protection against flying objects,
large chips, particles of sand, dirt, etc. Impact Glasses offer
very limited protection when working with hazardous liquids
or potentially dangerous light radiation.
Goggles must be worn when working with any quantity
of hazardous liquids such as solvents, degreasers, poisons,
carcinogens, acids, or bases. Any material that has the chance
to splash into the users eye must not be handled without appropriate
Shields must be worn when there is a higher degree
of hazard from chemical splash or when handling large quantities
of chemicals. Face shields are required when handling pathogenic
blood or handling primates. Face shields do not offer adequate
eye protection and must only be worn in addition to splash goggles.