Which of the following equipment requires periodic recalibration?

Periodic recalibration of pesticide application equipment is essential to ensure accurate delivery and application rates of the pesticides used. This helps maintain the effectiveness of the product while minimizing the risk of over-application or under-application, which can lead to environmental harm and regulatory violations.

All types of pesticide application equipment, including spray nozzles, bellows hand dusters, and backpack sprayers, may need recalibration due to wear and tear, changes in environmental conditions, or modifications in the equipment settings. By recalibrating regularly, operators can verify that the equipment continues to perform as intended, thereby ensuring compliance with safety standards and regulations in pest control practices.

Engaging in this practice not only supports effective pest management but also promotes responsible pesticide use, which is crucial for protecting both human health and the environment.