Manufacturing Skill Standards Council (MSSC) Safety Assessment Practice Test

_______ respirators purify the air by filtering the air to reduce the concentration of substances such as dusts, mists, and fumes.

1. Particulate removing

2. Vapor or Gas Removing

3. Atmosphere-supplying

4. Self-Contained

The correct answer is: Particulate removing

Particulate removing respirators are designed specifically to filter out airborne particles, including dust, mists, and fumes. These types of respirators use various filtration media to capture these contaminants from the air, thereby reducing the concentration of harmful substances inhaled by the wearer. This is particularly important in environments where dust and other particulates are present, as these respirators help protect respiratory health by ensuring that the air being breathed in is cleaner and safer. In contrast, vapor or gas removing respirators are focused on eliminating specific gases or chemical vapors rather than physical particulates. Atmosphere-supplying respirators provide breathable air from a different source rather than filtering existing air, and self-contained respirators come equipped with their own air supply, making them suitable for situations where external air quality is too dangerous. Therefore, the emphasis of particulate removing respirators on filtering specific solid and liquid particles makes them vital for environments with such contaminants.