Air Purifying Respirators (APR)
The air-purifying respirator, or "APR", has an air-purifying filter, cartridge, or canister that removes specific air contaminants, such as particulates, gases, and vapors, or both from the air. Air-purifying respirators are available in non-powered and powered types.
Non-Powered Air-Purifying Respirator (APR)
When using a non-powered air-purifying respirator, the user operates it simply by breathing.
There are basically three types of non-powered APRs:
- half mask/Dust mask
- half mask (Elastomeric)
- full face piece (Elastomeric)
Key Features
- elastic face piece covers entire face
- inspiratory effort of wearer draws ambient air through filter(s) before air is inhaled
- provides increased protection when used with filters, cartridges, or canisters that remove specific contaminants
Advantages
- comparatively light weight
- does not restrict mobility
- provides both respiratory and eye protection
Disadvantages
- Does not supply oxygen (cannot be used in low oxygen environments).
- May only be used when air contaminant level is below the concentration limits of the filter(s).
- Fit testing required.
- Some contaminated air can leak into facepiece.
- Communication can be difficult.
Knowledge Check Choose the best answer for the question.
2-3. Which type of respirator would the user operate simply by breathing?
You forgot to answer the question!