What was the source of your copper mesh ? many copper scrubbers from
supermarkets are copper coated steel
and are no good to test try a magnet if it sticks it ain't copper, if
you are certain that they are copper usually white vinegar will do the
job just soak with vinegar and then rinse well with water.
I use amphora copper mesh :) Guaranteed:)
>When using copper mesh column packing on a sugar wash the copper turns
>a blackish color and has an extreme metalic smell. I soaked the copper
>mash in a mild solution of citric acid and it recovered it's copper
>color but still has the off/obnoxious smell. Can copper mesh be used
>over? What caused the black coloration?/Smell? This same copper mesh
>was used with a sour mash corn run with no problem.............??