Pretreatment with the Openair PFW10 plasma nozzle is done with very high contour accuracy and is potential-free (no transfer of voltage to the material). This type of plasma nozzle is mainly used when parts are to be plasma-treated with high process speed, high energy, or selectively when only a certain part of a work piece (e.g. a bonding groove) is to be treated. The Openair PFW10 and PFW20 plasma nozzles are also well suited for the potential-free plasma treatment of very sensitive components, such as circuit boards.