Re: Brass in a Still
- The worry about brass is not that it replaces copper, nor the zinc,
but the lead that exists in some brass alloys to make them easier to
machine or draw into final shapes.
That lead can be removed from the surface of the brass pieces by
soaking them in a solution of 2 parts 5% vinegar and one part 3%
hydrogen peroxide for a few minutes. If the solution turns blue
green, mix up some fresh solution and repeat. The brass will turn
I'd strongly recommend doing this to the tubes you will use, because
the condenser IS directly in the path of consumption, and any lead
that leaches out will end up in your final product.
There is a lot of information on this subject to be found by
searching the homebrew digest archives (www.hbd.org)