Most laboratories insist that protective goggles are worn. Without them, it is too risky to work with most chemicals. Usually, the lens is a special type of plastic that affords protection from both mechanical impacts, and acid and base chemicals.
A maioría dos laboratorios insisten en que se empreguen gafas de protección. Sen elas, é demasiado arriscado traballar coa maioría dos produtos químicos. Normalmente, as lentes son dun tipo especial de plástico que permite protexer dos impactos mecánicos e dos ácidos e bases.