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4.2. Calibration of manual knapsack sprayer
Using calibrator bottle (optional).
• Hold the lance at the working height and spray to measure
the application band width.
• Based on the band width, calculate the total walking dis-
tance required to spray the desired area. Use the chart below.
Band
width
Band width
(m)
0.5 0.7 1.0 1.2 1.5
Distance to
walk (m)
50.5 35.7 25.0 20.8 16.7
Attach the calibrator bottle to the lance as shown:
Lance
Cover
Filter
Nozzle
Nozzle cap
Calibrator bottle
Constant walking speed
Uniform spray height
Sprayer cleaning and main-
tenance
4.1b. Application
Wear appropriate protective clothing
Do not contaminate water
Spray downwind and avoid drift Keep constant height
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