Which PPE level provides the highest level of protection against unknown airborne hazards and chemical splash?

• A. Level A.
• B. Level B.
• C. Level C.
• D. Level D.

Answer: (A)

When hazards are unknown, you need the most complete protection available: a fully encapsulated chemical-protective suit paired with a supplied-air respirator. This setup surrounds you completely, shielding skin, eyes, and lungs, and the air supply is usually under positive pressure, which helps keep contaminants from seeping in. That combination blocks both dermal exposure from splashes and inhalation of unknown vapors, making it the strongest protection among hazmat PPE options.

Other configurations offer strong respiratory protection but either leave skin exposed to splash or rely on air-purifying systems that may be overwhelmed by unknown contaminants. Standard work clothing provides essentially no protection against chemical splash or airborne hazards. So, the choice that features a fully encapsulated suit with a continuous air supply delivers the highest level of protection in this situation.