ASABE Revises Standard

Defining Spray Nozzle

Droplet Spectrum Categories

The American Society of Agricultural and Biological Engineers (ASABE) has revised the spray nozzle classification standard. The revised document, ANSI/ASAE S572.1, Spray nozzle Classification by Droplet Spectra, defines spectrum categories for classification of spray nozzles. These classifications provide the nozzle user with droplet size information primarily to indicate off-site spray drift potential and application efficacy.

The document update includes two additional classification categories, extremely fine and ultra coarse, and moves toward harmonization with vector control needs and similar ISO standardization efforts. The changes also include industrial rights of way industry segments and clarifies the emphasis on drift management.

A copy of the document can be ordered by contacting ASABE headquarters directly at: martin@asabe.org. ASABE members and those with site-license privileges to the ASABE online Technical Library, at ASABE.org, can obtain an electronic copy of the standard in about four weeks.