What area is used to calibrate hand sprayers?

What area is used to calibrate hand sprayers?

• A. 10 ft × 10 ft (100 ft²).
• B. 20 ft × 20 ft (400 ft²).
• C. 5 ft × 5 ft (25 ft²).
• D. 12 ft × 12 ft (144 ft²).

Answer: (A)

Calibrating a hand sprayer relies on spraying a defined test area and measuring how much liquid is discharged, so you know the spray output per unit area. The standard area used is a 10-foot-by-10-foot square, which equals 100 square feet. This size is practical: it’s large enough to capture a representative spray pattern and reduce measurement error, yet small enough to set up easily on turf or in a test space. After spraying, measure the collected volume, then divide by the area (100 ft²) to get gallons per 100 ft². If needed, you can scale that to gallons per acre by multiplying by 435.6. Using this fixed area keeps calibration consistent and minimizes variability, which is why 100 ft² is the standard choice.

Calibrating a hand sprayer relies on spraying a defined test area and measuring how much liquid is discharged, so you know the spray output per unit area. The standard area used is a 10-foot-by-10-foot square, which equals 100 square feet. This size is practical: it’s large enough to capture a representative spray pattern and reduce measurement error, yet small enough to set up easily on turf or in a test space. After spraying, measure the collected volume, then divide by the area (100 ft²) to get gallons per 100 ft². If needed, you can scale that to gallons per acre by multiplying by 435.6. Using this fixed area keeps calibration consistent and minimizes variability, which is why 100 ft² is the standard choice.