What is the main drawback of cartridge respirators?

Cartridge respirators are designed to filter harmful substances from the air, but one of the primary concerns with their effectiveness is the potential for leakage around the face shield. A proper seal is essential for the respirator to function effectively; if there are gaps between the respirator and the user's face, contaminants can bypass the filters, exposing the user to hazardous materials. This leakage can be exacerbated by factors such as facial hair, improper fit, or movement, making it a significant issue in ensuring adequate protection.

While other factors like weight, cost, and lifespan are considerations in choosing respirators, the specific limitation regarding leakage directly impacts the user’s safety and health. Maintaining a proper seal is critical for the intended protective function of the respirator, highlighting the importance of fit-testing and proper usage to minimize exposure to dangerous substances.