What is the purpose of a strainer/screen in a nozzle?

The purpose of a strainer or screen in a nozzle is primarily to filter out debris. This is crucial because any particulate matter, contaminants, or larger particles can clog the nozzle, disrupt the flow of the herbicide, and potentially affect the uniformity and effectiveness of the application. By ensuring that only clean liquid passes through the nozzle, the strainer protects both the nozzle itself from damage and the quality of application on the target area. This mechanism is especially important when using agricultural chemicals, as maintaining the integrity of the application process is vital for achieving the desired results.

Other options, such as increasing pressure, adjusting flow rate, or stabilizing the mixture, do not accurately represent the fundamental role of the strainer/screen, which is focused on maintaining a clean and efficient delivery system for the herbicide.