Dosed application of nematodes, the well thought-out dosing system ensures precise mixing of water and nematodes, precise admixture of nematodes (2%), water connection pressure min. 1.5 bar to max. 5 bar, higher water flow: at 4 bar new 14 lmin. (previous version 6 lmin.), simple rinsing with neutral position (no nematode addition to the water = pure running water 14 lmin.), handle can be swiveled opposite the container, quickly and easily installed (quick-release fastener and screw-type fastener), robust, handy device for commercially available nematodes, maintenance-free, simple to clean