The heart of eSPRAY is the patented “electrostatic nozzle”, whereby the air is combined with liquid, which atomizes the liquid stream to make mist of thousands of tiny spray droplets (those are 30 to 60 microns). Then, just before the mist exists the nozzle, it is exposed to a negative charge. As the mist enters the plant canopy, it stalls, resulting in a “charged” spray cloud inside the canopy and this is when the magic begins.

The electrically–charged droplets are automatically attracted to the “grounded plant”. This charge on the droplets is small, but the force attracting the spray droplets to the “target plant” is up to 75 times greater than the force of gravity. Electrical charging causes a natural force of attraction between the spray droplets and the plant, which allow droplets to move in a reverse direction and move upwards, against gravity to coat the underside and back sides of the plant’s leaf, fruits and vegetables. This phenomenon referred to as “electrostatic wrap-around”.

In comparison to conventional sprayers which produces droplets of size more than 250 microns simply run off a leaf and onto the ground. However, all of the spray droplets leaving through eSPRAY nozzle have the same negative polarity of charge, thus they cannot collect into large droplets, and does not fall onto the ground. At the same time, the swirling spray droplets are not attracted to areas already coated and continue to seek out uncovered surface areas until there is uniform coverage (deposition) through out the entire canopy.

Since diseases and insects are usually hidden on the undersides of surface areas and deep inside the canopy. If the spray coverage is non-uniform and lack of reaching to these hidden areas then these diseases and insects can continue to survive. The distinct advantage of eSPRAY’s electrostatic spraying is the increased chance of the disinfectant findings its target.