is an activated inorganic flux for soldering and tinning metal goods made of copper, iron, steel and brass, the flux residues have a corrosive effect, they are water-soluble and can be removed from smooth surfaces with water or washing solution, with easily solderable metals a thin application of the is often sufficient Soldering water, for surfaces that are difficult to solder, cleaning or mechanical removal of the oxide surface by grinding is recommended beforehand, the type of application depends on the application, brushes, drops and dipping are suitable, heating can be done with a plunger, a flame or by dipping into a hot one When immersing, make sure that the workpiece is not immersed too quickly in the hot solder bath so that the flux does not evaporate explosively