Ric,
Titrettes are a somewhat expensive alternative; they are a reverse
ripper. They have all of the same drawbacks as the ripper method
though. I don't do the ripper either, more due to laziness than
anything else...
Ric wrote:
> Anyone have any advice / shortcuts on using Ripper method for determining
> free SO2? Been struggling with the procedure layed out by Margalit. It's
> terribly time consuming and full of opportunities for error - especially
> first titrating for the normality factor of the iodine solution before even
> titrating for the SO2.
>
> Anyone have any shortcuts that are verifiable? Or alternative methods; short
> of aeration-oxidation (I'm not clever enough to build the appratus!).