The range of droplet sizes that a nozzle can produce is known as the

• A. Nozzle flow range
• B. Droplet Size Spectrum
• C. Spray pattern
• D. Viscosity range

Answer: (B)

Droplet size spectrum describes the range of droplet sizes a nozzle can produce. It captures how spray droplets vary from fine to coarse within a single spray, and it’s shaped by nozzle design, operating pressure, and flow rate. This spectrum matters because it affects drift and coverage: many fine droplets tend to drift more but can improve target contact, while larger droplets reduce drift and may provide less uniform coverage. The spray pattern refers to the spatial shape of the spray in the air, not the size distribution of droplets. Viscosity range is about how thick the liquid is, which can influence flow but doesn’t define droplet sizes. Nozzle flow range would describe how much liquid the nozzle can deliver, not the droplet size distribution.