1/128 Sprayer Calibration
Calibration Tool
 
Step 1 Measure an area equal to 1/128 of an acre - 340 sq ft.  (18.5x18.5 or 10x34)      
Step 2 Measure the time it takes to spray the measured area          
Step 3 Spray into a container for the same amount of time.  Measure the water collected in ounces
               
Your sprayer is spraying at a rate of  gallons per acre        
               
Read the label how many quarts of herbicide should be applied per acre     
In a sprayer you will need to ad ounces per gallon of water      
What is your tank's capacity in gallons            
You will be able to spray an area of square feet