Respirators (Required and Voluntary)

Required Respirators

Respirators are required when exposure to a chemical is above a published exposure level, a medical professional in the University Employee Health Clinic (UEHC) says that the respirator is required to protect the employee’s health, or an operating procedure states that it is required. For a required program the users must pace a medical evaluation, a training class on the respirator, and a fit test (not required for a lose-fitting PAPR). 

Voluntary Use 

Respirators are considered voluntary when exposures are below published exposure levels. Any respirator besides an SCBA can be worn voluntarily.  All users must complete the appropriate training. In addition to training employees wearing tight fitting rubber or silicone mask must receive a medical evaluation from UEHC.

Questions about this topic can be directed here.



  • Respirator: Dust Mask - W141OS
  • Respirator: PAPR Hood or Helmet - W139OS
  • Respirator: PAPR Tight Fit Facepiece - W140OS
  • Respirator: Tight Fit Facepiece - W138OS
  • Respirator: Voluntary Use - W050OS
  • Pandemic Influenza Dust Mask - W451OS

For descriptions of each course including who should take them, see the Safety Training Course Guide.


External Links: