What should applicators do to ensure the effectiveness of a respirator?

To ensure the effectiveness of a respirator, it is crucial to conduct a fit and seal check each time it is used. This process confirms that the respirator fits properly on the wearer’s face, creating a secure seal that prevents contaminants from entering the breathing zone. A good fit is essential for the respirator to perform its intended function of filtering out harmful substances in the air.

Conducting fit tests and checks ensures that any potential gaps or misalignments are identified before the respirator is used in an environment where pesticides or other hazardous substances are present. This is especially vital in pesticide applications, where exposure to harmful chemicals could pose significant health risks.

While other choices touch on important aspects of respirator use and care, they do not address the critical need for fit and seal checks. For instance, using a respirator only when spraying may not be enough if the fit is poor; simply keeping it stored away from sunlight is related to its longevity, not operational effectiveness; and switching to a mask when not using pesticides does not relate to the effectiveness of respirators during application. Thus, the focus on the importance of fit and seal checks underlines the primary concern for safety and effectiveness while using respirators.