Rio Grande-exclusive self-pickling Ready-Flux™ provides all the benefits of more expensive fluxes at a very affordable price. Ready-Flux will not bubble or pop during heating and works great for most jewelry applications from low temperatures to high temperatures. Use with gold, silver, nickel, brass, copper and other non-ferrous metals; effective from 1,100°–1,700°F (593°–927°C). This flux has a long shelf-life and will not crystallize in the bottle.
• Contains ammonium chloride and boric acid.