Iowa Aerial Applicator Category 11 Practice Exam

Which nozzle color is mainly associated with medium-sized droplets?

Yellow Purple Orange Red

Correct Answer:

Orange

Explanation:

Droplet size is shown by nozzle color, giving a quick way to gauge how big the droplets will be when sprayed. Orange is used in many color charts to indicate medium-sized droplets. That size is a compromise between drift risk and coverage: finer droplets drift more with wind, while larger droplets may bounce or fail to cover the leaf surface as well. So orange, representing medium droplets, fits the goal of balanced drift control and adequate coverage. The other colors typically map to smaller or larger droplet ranges, so they don’t align with medium droplets.

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