Weller t0051383199 electronic liquid flux weller t0051383199 weller electronic flux is a halogen free colophony based liquid flux that promotes fast and efficient soldering of electronic components it is also suitable for use with tin plating and solder pot dip tin plating the liquid flux remains on the soldered area and should be removed using a suitable flux cleaner if a flux free board is required weller t0051383199 electronic flux 100ml