Liquid deoxidiser for braze welding of steels, copper and copper alloys at medium temperature range (700-1000°C). Used in conjuction with the appropriate equipment like FRO FLUX Vaporizer and is fed directly through the burner to the brazing joint. Due to no flux residue, resultant joints are very clean. Gives very good results with copper-phosphour alloys and copper-zinc brazing alloys. When used together with silver containing brazing alloys, it is needed to use also conventional fluxes, like F13. Contains :Methyll Borate.