(a) protective clothing worn in a laboratory in which hazardous substances are handled is not worn outside the work area and is not stored in a manner or location in which employees may be exposed to the hazardous substances,

(b) eating and drinking are not permitted in the laboratory,

(c) food is not kept in the laboratory, except as required for testing,

(d) laboratory glassware, vessels and containers are not used to prepare or store food or beverages for consumption, and

(e) hazardous substances are not pipetted by mouth.