"Negative pressure respirator" means a respirator in which the air pressure inside the facepiece is negative during inhalation with respect to the ambient air pressure outside the respirator.
Nev. Admin. Code § 459.0527
NRS 459.201
"Negative pressure respirator" means a respirator in which the air pressure inside the facepiece is negative during inhalation with respect to the ambient air pressure outside the respirator.
Nev. Admin. Code § 459.0527
NRS 459.201