Check driving speed:

1. Half fill the spray tank with water.
2. Mark out 100 m and note time to drive this distance.
3. Driving speed formula: Distance driven (m) x 3.6 / Time (sec) = km/h
   Example:If driving 100 m takes 50 seconds, then the spraying speed (100 x 3.6 / 50) is 7.2 km/hour.

Select nozzle:

Use the calibration disc or formula (nozzle spacing 50 cm):

Example: By aligning 7.2 km/h over 150 l/ha on the calibration disc the line in the 'window' shows we need a flow of 0.9 l/min.

Then a suitable combination of nozzle size and pressure can be found on the lower half of the calibration disc. e.g. ISO 025 at 2,3 bar (or ISO 02 at 3,6 bar).

(The rate formula is: speed x coverage / 1200.
e.g. 7.2 km/h x 150 l/ha / 1200 = 0.9 l/min )