About
Note: Do not rely on this information. It is very old.
Black Flux
Black Flux consists of a mixture of crude tartar, saltpetre, bottle glass, and a little borax, melted together and finely powdered. It is largely used in assaying.
Black Flux consists of a mixture of crude tartar, saltpetre, bottle glass, and a little borax, melted together and finely powdered. It is largely used in assaying.