Which statement best describes Level A, Level B, and Level C PPE and their use in hazard settings?

• A. Level B PPE Is The Highest Level Of Respiratory Protection
• B. Level C PPE Provides The Same Air Protection With Coveralls
• C. Level A PPE Provides Highest Skin, Eye, And Respiratory Protection; Used For Unknown, Highly Hazardous Aerosols
• D. Level D PPE Is Not Used In Hazardous Environments

Answer: (C)

Understanding PPE levels means matching protection to how unknown or dangerous the environment is. Level A offers the highest protection for skin, eyes, and lungs because it uses a fully encapsulating chemical protective suit paired with a self-contained breathing apparatus. This combination is essential when hazards are unknown or highly toxic, since anything could contact the skin or be inhaled and cause serious harm. Level A is chosen precisely to guard against those worst-case unknown aerosols. Level B provides strong respiratory protection as well, but it does not fully seal the body, so there’s more skin exposure risk than with Level A. Level C relies on an air-purifying respirator and known contaminants, offering less protection to skin and eyes and is appropriate only when the hazard is understood and predictable. Level D is basic work attire and not used in hazardous environments.