Quantifying Spray Characteristics

Rapid and robust quantification of spray parameters, especially drop size, are essential tools in the application of sprays. Below is a table which summarizes current instrument manufactures (listed in alphabetical order) and the products that are applicable to sprays. Additional information of the principle of operation and methods can be found on their websites.

The three main types of drop sizing instruments that are in used are laser diffraction, Phase Doppler Particle Analyzer (PDPA) or Phase Doppler Interferometer (PDI), and optical imaging. PDPA measures simultaneously drop size and velocity while the other methods measure only drop size.

Several spray nozzle manufacturers' web sites provide product information and technical resources on applications.