Prior to the use of a plant protection device it must be completed, assembled and tuned in accordance with the user’s manual. The amount of current of the spaying solution between different sprayers must not exceed 10% of the average current amount of all sprayers. The difference between the smallest and largest amount of the current of the spraying solution must not exceed 8% of the average current amount. Plant protection devices generating aerosols or mist may be used only in greenhouses or w