The tractor mounted sprayers of the BP series have been developed by Lochmann Plantatec for the application of herbicides and all other plant protection products. The unit consists of a polyethylene container with a clean water tank for cleaning, a hot dip galvanized steel frame (see the APS series of sprayers), as well as a vibration damped three membrane pump, which provides both a constant and a large flow rate even at low speeds. The controls are easily accessible from the driver’s seat and a return flow agitator provides a uniform spray mixture.