Ripper math advice needed

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!).

Reply to
Ric
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Reply to
ralc

Reply to
Joe Sallustio

Ditto that - one concern I've heard / read; the titrettes are not altogether accurate. True / false?

Reply to
Ric

True with reds, because they emulate the Ripper method. The problem lies there. There should be some posts on this in the archives...

Joe

wrote:

Reply to
Joe Sallustio

You may find section 14 of the SO2 Article at

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useful.

Ben

Reply to
Ben Rotter

Ben, Every time I go back to your site I learn something new, great work. Much appreciated.

Joe

Ben Rotter wrote:

Reply to
Joe Sallustio

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