For hard soldering gold, silver and platinum. AquiFlux makes hard soldering as easy as soft soldering. This water-based, yellow-green flux is great on silver, gold, and platinum and other metals with high melting points. It dissolves oxides, preserves the temper and color of the metal. Special adhesive properties of this liquid flux help to hold small pieces of solder in place.
The spray bottle allows you to apply the flux without the use of a brush.