"Aaron Puhala" wrote in message
news
Tom is correct on the copper pipe treatment. Copper Sulfate can also be
used. I personally prefer not to use copper treatments on my wine simply
because copper is toxic and I don't feel I can guarantee that the copper
level
in my wine is low enough after treatment.

The reaction is pretty much self-limiting, and the contact time really isn't
long enough to dissolve much copper into the wine, as copper is nearly
inert. Besides, copper is not _that_ poisonous - especially in such low
concentrations. Might even be a required trace element in humans' diet.

If you're really worried about it, use the sterling silver trick instead.
That's extremely safe.

Tom S