The use of other chemicals such as carbon tetrachloride are slowly being phased out. Eye protection must be worn at all times the laboratory is in session . This is a regulation of the State of Missouri. The wearing of approved eye protection can be met by several different types of glasses or goggles. If you normally wear glasses, these may be suitable provided the lenses are made of safety glass.
Most plastic lenses meet or exceed the specifications of safety glass and are acceptable.
Students wearing plastic lenses should be aware that the lenses can be attacked by some of the solvents used in the laboratory and some loss of the optical properties can occur if the two come in contact. It is also recommended that a pair of inexpensive safety side shields be purchased from the bookstore. Students that do not normally wear glasses are encouraged to purchase a pair of goggles or non-correcting glasses. Although goggles offer the best eye protection, they also have a tendency to fog up thereby reducing vision. The wearing of contact lenses in the laboratory is strongly discouraged.