ASAE/ASABE S641 (R2022)

This Standard defines droplet size categories for the classification of aerial application spray atomizers, relative to specified reference flat fan nozzles discharging into a high-speed air stream, which enhances atomization simulating aerial application conditions. The purpose of classification is to provide the nozzle user with droplet size information for use in making application decisions to meet pesticide product label and other regulatory requirements related to pesticide spraying by aircraft.