In preliminary trials, patients with asthma or lung disease wore the masks which monitored their breath for nitrite, a chemical ... “The mask represents a new paradigm for respiratory and ...

Respirators, more commonly known as face masks, are meant to keep health care and emergency workers safe from chemicals and infectious particles. Surgical masks can be helpful if you are sick ...

Most Americans learned what an N95 mask was during the COVID-19 pandemic. But what many still don’t know is that every one of them was certified by a single, government-run lab in Bruceton, Allegheny ...

Once the test exercise series is complete, the instrument calculates an overall fit factor. A respirator with a half mask facepiece must achieve an overall fit factor of 100 and a respirator with a ...