ULV equipment calibration requires which basic items?

• A. A watch and 2 containers
• B. A digital timer
• C. A scale
• D. A ruler

Answer: (A)

Calibration of ULV equipment centers on measuring how much solution is emitted in a known period so you can set the correct flow rate. To do this reliably, you need a timing reference and a way to collect the sprayed output. A watch provides a simple, dependable time signal in the field, and two containers let you capture the spray during that timed interval so you can measure the delivered volume. Once you have the volume and the time, you can compute the flow rate and adjust the equipment accordingly. Other tools like a scale or ruler aren’t the core needs for this basic step, and while a digital timer could substitute for a watch, the essential combination remains a timing device plus containers to collect the output.