MDARD Michigan Core Pesticide Applicator Practice Exam

What should you do before wearing a tight fitting respirator to apply pesticides?

1. Perform seal check(s)

2. Do a qualitative fit test

3. Put vaseline on the edges of the respirator to enhance the seal

4. Wear additional padding for comfort

The correct answer is: Perform seal check(s)

Before wearing a tight-fitting respirator to apply pesticides, performing seal checks is an essential procedure. Seal checks help ensure that the respirator is properly fitted to the face, which is crucial for effective protection against pesticide exposure. A well-sealed respirator prevents the inhalation of airborne contaminants, including pesticide particles and vapors, which can be harmful to health. Conducting a seal check involves covering the respirator's facepiece and inhaling sharply to check for any air leaks around the edges. If air leaks are detected, it indicates that the respirator is not fitting correctly, which means it would not provide adequate protection. Ensuring a proper seal is a critical safety measure that contributes to the overall effectiveness of respiratory protection when handling pesticides. The other choices, while potentially related to respirator use, do not specifically address the immediate action required before donning the respirator. A qualitative fit test is a more comprehensive evaluation used to certify fit rather than a preliminary step. Using vaseline could actually compromise the integrity of the respirator’s materials, and additional padding may alter the seal needed for effectiveness rather than enhance it. Therefore, focusing on seal checks prioritizes the immediate need for safety in pesticide application.