Our own special mix without lead (no cupelling necessary) and consisting of 4 main ingredients: Sodium Tetraborate, Sodium Carbonate, Silica and Manganese Dioxide.
This flux is especially good for melting Karat or pure gold with your Kwik Kiln and delivers a beautiful, shiny finish to your gold without sticking. Good for smelting ores and melting precious metals in all gold processing kilns.
Note: Flux may be shipped via USPS Priority inside doubled 4 mil bags, rather than the plastic jar shown. If this is not acceptable, please inform us during your purchase.