How to calibrate knapsack sprayer?

In instructions of all crop protection products are written the dosage of pesticide use per hectare. But farmers worried about how many grams of pesticides are needed for 10 liters of water? There is no exact answer to this question. In the tutorial video “Farmer Assistant” we try to find the closest answer. Let’s carry out the calibration of the sprayer and set the required number of refilling for the processing area and the dosage of the pesticide per filling.