Ultra-low Volume Sprays

These concentrates may approach 100 percent active ingredient. They are designed to be used “as is” or to be diluted with only small quantities of a specified carrier. They are used at rates of no more than 1/2 gallon per acre. These special purpose formulations are used mostly in outdoor applications, such as in agricultural, forestry, ornamental, and mosquito control programs.

Advantages of ultra-low-volume formulations include:

• Relatively easy to transport and store
• Remain in solution; little agitation required
• Not abrasive to equipment
• Will not plug screens and nozzles
• Leave little visible residue on treated surfaces

Their disadvantages:

• Difficult to keep pesticide on target—high drift hazard
• Specialized equipment required
• Easily absorbed through skin of humans or animals
• Solvents may cause rubber or plastic hoses, gaskets, and pump parts and surfaces to deteriorate
• Calibration and application must be done very carefully because of the high concentration of active ingredient