Before using a respirator, what must be ensured?

The requirement for ensuring that a respirator fits correctly is crucial for its effectiveness in providing protection against airborne contaminants. A proper fit is essential because if the respirator does not seal adequately to the wearer's face, contaminants can bypass the filter and enter the breathing zone. This could undermine the primary purpose of using a respirator, which is to safeguard the user’s health by filtering out harmful substances.

Correct fitting involves checking the size, type, and adjustments of the respirator to conform to the specific facial characteristics of the individual wearer. This is often achieved through fit testing, which can be qualitative or quantitative, ensuring that the user can achieve a proper seal and maximizing the respirator’s effectiveness during pesticide use or other hazardous environments.

While cleaning, inspection, and being new can be important aspects in maintaining respirators, they do not replace the fundamental necessity for a correct fit. A cleaned or inspected respirator that does not fit properly will not provide adequate protection, highlighting why fit is the priority before use.