How often should calibration be performed on application equipment?

• A. Once
• B. Regularly
• C. Never
• D. Before Each Use

Answer: (B)

Calibration must be performed regularly because equipment tends to drift from its target output over time due to nozzle wear, changes in pressure, product viscosity, and environmental conditions. Regular checks keep spray rate, pattern, and droplet size aligned with label requirements, ensuring effective control while reducing waste and environmental impact. Calibrating only once or never risks accumulating undetected inaccuracies, and calibrating before each use is often impractical and doesn’t catch drift that occurs between uses. Following a routine calibration schedule (and recalibrating after maintenance or switching products) keeps applications consistent and within specification.