No Fire-Skayl Soldering Flux

A liquid hard soldering flux that prevents the formation of firecoat and firescale pduring soldering. Use before primary flux for firescale. Protection Contains: Water, Boric Acid, Borax & Trisodium Phosphate. Preheat the silver with a soft torch flame. Spray NO-FYR-SKAYL with an atomizer so  it will  instantly dries on contact, forming a uniform white crust on the silver. Coat all sides so that the reflective surface of the metal is hidden.