What factors are used to classify respirators for pesticide handling?

The classification of respirators for pesticide handling primarily involves evaluating both oil degradation-resistance and filter efficiency. These factors are crucial because they indicate how well a respirator can protect the user from specific types of airborne contaminants associated with pesticides.

Oil degradation-resistance is important because many pesticides can be oil-based, and a respirator that cannot resist oil degradation may become ineffective over time. Filter efficiency pertains to the respirator's ability to remove particulate matter and various gases from the air, which is essential for ensuring that the user is protected from inhaling harmful substances.

By focusing on these two aspects, it allows for the selection of appropriate respirators that provide adequate protection based on the chemicals being used and the type of exposure expected during pesticide application. Hence, understanding these classification criteria is vital for ensuring the safety and health of those handling pesticides.