Which color code indicates a nozzle that produces extra fine spray droplets?

The color code that indicates a nozzle producing extra fine spray droplets is purple. In aerial application and spray technology, nozzles are systematically color-coded to help operators quickly identify the droplet size they produce. Purple nozzles are specifically designed for applications requiring very small droplet sizes, which are ideal for situations that demand high coverage and penetration of the target area, such as in the application of certain pesticides or herbicides.

Each color corresponds to a designated droplet size range, helping aerial applicators select the appropriate nozzle for their specific operational needs. Understanding these color codes is crucial for effective pest control and minimizing potential drift of chemicals into non-target areas. The other colors represent different droplet sizes: red typically indicates larger droplets, while blue and green represent intermediate sizes, making them suitable for various applications but not for producing extra fine droplets like purple nozzles do.