Why are closed systems used in mixing and loading pesticides?

Closed systems are utilized in mixing and loading pesticides primarily to prevent spillage and exposure. This design minimizes the risk of pesticide releases into the environment and reduces the chance of operator exposure during the handling process. By containing the materials within a closed system, the risk of accidental spills that could contaminate the surrounding area is significantly lowered. Furthermore, these systems are engineered to ensure that the pesticides remain contained until they are applied, thereby enhancing the safety of the application process for both the operator and the environment.

The other options, while they might seem appealing, do not accurately reflect the primary benefits of using closed systems. For instance, while personal protective equipment (PPE) is important in pesticide handling, closed systems do not eliminate the need for PPE but rather complement it by adding an additional layer of safety. Improved visibility is also not a main focus of closed systems, as their design prioritizes safety over visibility during the mixing and loading. Lastly, cost reduction may be a secondary benefit of using closed systems, but the primary goal remains the protection of human health and the environment.