GPK Premium Gold Flux (Black) 1 lb Parts Its concentric coil configuration offers

Its concentric coil configuration offers excellent pinpointing performance and clear target responses

They are all black and therefore difficult to photograph in a way that gives adequate credit to the quality

this bottle should comfortably treat 5 - 10 coins depending on how much residue needs to be removed

but there is still some mixed in with your gold

or processing samples from a mining claim

GPK Premium Gold Flux (Black) 1 lb Parts Its concentric coil configuration offersOur 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 Kwik Kilns, along with other kilns and furnaces. Please note: Premium Gold Flux