NIOSH approves first elastomeric half-mask respirator without an exhalation valve

Washington — NIOSH has approved – for both personal protection and source control – the first elastomeric half-mask respirator without an exhalation valve.

In a Nov. 16 agency news brief, NIOSH acknowledges concerns that filtering facepiece respirators and EHMRs with exhalation valves “may allow unfiltered exhaled air to escape into the environment,” compromising the equipment’s effectiveness to protect others if the wearer has COVID-19.

NIOSH notes that exhalation in EHMRs without exhalation valves is possible because the equipment’s particulate filters meet agency requirements, “thereby allowing it to also serve as a means of source control since it will maintain the high level of filtration upon exhalation.”

NIOSH published in the Sept. 14 Federal Register a Request for Information on the deployment and use of EHMRs in health care settings and emergency medical services organizations during the COVID-19 pandemic. The initial comment period was slated to end Oct. 14, but the agency extended it to Dec. 14.

Noting EHMRs’ low cost, ease of use, and ability to be cleaned and decontaminated, NIOSH anticipates the widespread use of the respirators will ease the demand for single-use N95 respirators in health care settings that are experiencing high numbers of COVID-19 cases.