"BJFB" > wrote in message
nk.net...
> My boyfriend wants to know if he can clarify wine using potassium
> metabisulfite, and if so how much should he use per 5 gallon carboys?

The short answer is "NO"!

Potassium metabisulfite is a sanitizer/preservative. It is not a clarifying
agent. Wine needs to have a little bit of it present to prevent spoilage
organisms from growing in it, but the amount is very small and it does
nothing to help clarify the wine. For that you need a fining agent, such as
gelatin, isinglass, chitosan etc.

Check out Jack Keller's or Ben Rotter's site for more on this topic.

Tom S