Gaugemaster GM05 Non Acid Safety Flux
Flux is used to aid the flow and adhesion of solder and very useful when de-soldering and re-soldering.
A good general flux with the added advantage of its non-acidic composition. For use on nickle silver and white metal. Apply with a brush carefully. Neutalise and clean after soldering.
Note: Avoid contact with eyes and keep out of reach of children.