"Ralconte" > wrote in message
om...
> Hi all, been browseing for a while, wanted to ask an off the cuff
> question.
>
> What is in Campden tablets? I use them instead of sodium or potassium
> metabisulfate, 'cause to date I haven't made more than 1-2 gal of wine
> at a time. People say they're sodum metabisulfate and a binder, but
> what's the binder?
>
> It couldn't be sugar, that would ferment. Could it be starch? Or can
> beer yeast use that? Or maybe just silica dust. There's a lot of
> binder if each tablet contains only 1/2 gram of pot-meta. So where
> does it all go?

On one tub I have here it says:

Sodium Metabisulphite 93%
Potassium Benzoate 5%
Polyvinyl Pyrrolidone

On another brand it says:

Sodium Metabisulphite
Polyethylene Glycol