What Does Demand Respirator Mean?
A demand respirator is a type of negative-pressure
face-piece which supplies breathable air from a source of oxygen to the wearer.
This type of respirator is used in environments that are too contaminated for
the wearer to breathe in the atmosphere, even with filtration. This can be due to the atmosphere either
being oxygen-deficient or too contaminated for it to be purified through a respirator before
WorkplaceTesting Explains Demand Respirator
In workplace environments where workers are exposed to
contaminated air filled with toxic gases, low oxygen-concentration, or the air
temperature is too high or too low, the employer is required by The National Institute
for Occupational Safety and Health (NIOSH) to protect workers by supplying the
correct respirator for the environment the worker is exposed to. A demand respirator
works by creating a negative pressure within the face-piece on inhalation which
results in the flow of oxygen though the admission valve of the oxygen source
to the wearer.