I've believe chitosan and isinglass are both used for fining, I don't think
they have any effect on the levels of disolved CO2

"WxDaddy" > wrote in message
...
> The purpose of the chitosan is to drive off CO2 in your wine. Isinglass
is
> used in some kits instead. If you don't use it, you might find yourself
> with some popped corks.
>
>