The sophisticated dosing system ensures a precise mixture of water and commercially available liquid fertilizer. The water pressure connection ranges from a minimum of 1.5 bar to a maximum of 5 bar. It allows for accurate dosing of the liquid fertilizer (a dilution of 1% means that 1 liter of fertilizer is sufficient for 100 liters of water). Four concentrations are selectable: 0.2%, 0.5%, 1.0%, and 2.0%. At a pressure of 4 bar, the water flow rate is 14 liters per minute. Simple rinsing is possible with a neutral position (no addition of fertilizer to the water, resulting in pure flowing water at 14 liters per minute). The handle can be pivoted relative to the container and is quickly and easily mounted with a quick-release and a screw cap. This robust, handy device is designed for commercially available liquid fertilizers, is maintenance-free, and easy to clean. It is not suitable for nematodes.