Certain job tasks require wearing air purifying repsirators. These tasks often are associated with handling of hazardous materials, where there is the potential of exposure to workers via the inhalation exposure pathway. Examples include asbestos, volatile chemicals, infectious substances, and certain biological agents that are respiratory hazards. EH&S coordinates medical evaluations, respirator fit testing, and training on proper donning and doffing of respirators. for any questions on the respirator program, contact EH&S at 878-4038.