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