When is respiratory protection typically required when handling pesticides?

Respiratory protection is typically required during the mixing and loading of pesticides because this phase involves handling concentrated forms of the chemical, which can release airborne particles or vapors that may pose inhalation risks. At this stage, workers are often exposed to higher concentrations of pesticides compared to application, cleaning, or working in enclosed spaces.

During mixing and loading, it's crucial to prevent inhalation of toxic substances, as exposure can lead to acute health effects or chronic respiratory issues over time. Respirators are designed to filter out harmful substances from the air, ensuring that individuals can safely perform their tasks without significant risk to their respiratory health.

While respiratory protection might still be needed in some situations during application or when working in enclosed spaces, the dictated requirement for respiratory protection is especially emphasized during the initial handling phases to provide adequate protection against the elevated risk of exposure.