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Terminology Defined by the Respiratory Protection Standards

Yuan S

Physician or other licensed healthcare professional means an individual whose legally permitted scope of practice i.e. license, registration, or certification allows him or her to independently provide, or be delegated the responsibility to provide, some or all of the healthcare services required. Positive pressure respirator means a respirator in which the pressure inside the respiratory inlet covering exceeds the ambient air pressure outside the respirator. Powered air purifying respirator means an air-purifying respirator that uses a blower to force the ambient air through air-purifying elements to the inlet covering. Pressure demand respirator means a positive pressure atmosphere-supplying respirator that admits breathing air to the face piece when the positive pressure is reduced inside the face piece by inhalation.