Free SO2 Measurement
 

As I live in Bangkok, Thailand, I do not have access to all of the
various test chemicals used in measuring wine parameters.

I am trying to measure free SO2 using the test shown in Lum Eisenman's
The Home Winemakers Manual however this test calls for 0.01N Iodine
solution and I cannot locate this strength solution here. What I do
find is 0.1N solution.

The formula given for calculating free SO2 is Free SO2 = Volume of
Iodine X 3200 X Normality of Iodine and using the 0.1N solution makes
it almost impossible to make accurate measurements due to the small
amounts of Iodine required.

My question (I am not a chemist) is it possible for me to dilute the
0.1N solution to a 0.01 solution by the addition of either distilled
water, or other chemical, in order to obtain a 0.01N solution?


Cheers,

Bruce
Bangkok, Thailand

(brucatinetdorcodotth)