Battern's Self-Pickling Flux

It's the tried and true jewelers' hard soldering flux. Yellow green and self-pickling, it is the best in water based fluxes.Well mixed to eliminate suspension. Good for both hard soldering as well as soft soldering. Use on gold, silver, platinum and other metals with high melting points. Preserves temper and color of metal. The adhesive qualities of this liquid flux hold solder in place.