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!).