What should you do before wearing any tight-fitting respirator for pesticide application?

Before wearing any tight-fitting respirator for pesticide application, performing seal checks is crucial. A seal check ensures that the respirator fits properly on the face and creates the necessary seal to protect the user from inhaling harmful pesticides. This check verifies that there are no gaps between the respirator and the skin, which could allow contaminants to enter.

An effective seal is essential because it significantly enhances the effectiveness of the respirator, ensuring that the intended filter media can purify any air inhaled. If a proper seal is not confirmed, it would compromise the protection offered by the respirator, potentially exposing the wearer to hazardous substances.

While checking the expiration date, obtaining medical clearance, and ensuring the respirator is new are all important considerations in the overall use of respiratory protection, they do not directly address the immediate necessity of verifying the fit of the respirator before use. Proper fit is the first step in ensuring adequate respiratory protection during pesticide applications.