"Fit testing" is important when it comes to respirators. This ensures the respiratory safety of the wearer. When it comes to tight-fitting respirators, a good fit is very important. This means that the respirator will<em> seal to the skin</em>, so it is important not to have any facial hair like<em> beards, mustache, or stubble</em>. OHSA requires that the person should be<u> clean-shaven</u>.
Fit testing is also done <u><em>annually</em></u> in order to <em>adjust to any physical changes</em> such as <em>weight gain</em> or <em>dental work.</em> So, all of the choices above can change the fit of the respirator.
