"Ric" > wrote in message
...
> Are you real sure of the numbers, Lum? I don't have my chem texts with
> me right now - will check tomorrow - but 3 ppm of copper sulfate sounds
> pretty high --- anyone know the 'safe' limits of CuSO4? I thought it was
> in the neighborhood of something less than 1 ppm.
>
> Personally, I wouldn't want to drink wine with anything like 'too much'
> CuSO4 in it.
>
> At the very least - JG might want to consider bentonite fining the wine
> in the hope of dropping some copper ions?
>
>
> >
> > Don't dump that wine yet Joe.
> > The label on my jar of vitamins says........"each tablet contains 3
> > milligrams of copper (150% of the minimum daily requirement)." If your
wine
> > contains 3 milligrams of copper per liter, one 750 liter bottle of wine
> > would contain 2.25 milligrams of copper or just about the MDR of copper.
> > I would drink the wine. But, I would make sure I didn't drink more than
3
> > or 4 bottles per day.
> > Lum
> > Del Mar, California, USA
> > www.geocities.com/lumeisenman

I am NOT real sure of the numbers Rick.
I am sure of the quote from the label on my vitamin bottle.
I am also sure that Bentonite will not remove any significant amount of
copper from wine. But, fining with dry yeast can reduce the copper content
of wine considerably.
Lum