Free SO2 vs Total SO2

[RegionRat]

Can some explain the difference between; free, and total levels of SO2?

Thanks

RR

 

[tingo]

Total so2= fixed+free so2. Fixed so2 is the part that binds to oxygen, bacteria, etc. free is the part that still remains left over to continue protecting the wine.

 

[RegionRat]

Okay, easy enough. Thanks.

Which should I be more concerned about? I am getting ready to start testing stuff that has been bulk aging a few months. Should I test for free, total, or both?

RR

 

[Runningwolf]

Check for Free S02!

 

[ibglowin]

Here is a pretty good article (PDF) on the differences between Free SO2 and Total SO2

 

[GEM]

By the way, Morewine has a number of very good articles on their website that I would highly recommend any new winemaker read, even some "oldtime winemakers." Cheers, Gary

 

[RegionRat]

By the way, Morewine has a number of very good articles on their website that I would highly recommend any new winemaker read, even some "oldtime winemakers." Cheers, Gary

Thanks Gary. The above pdf caused me to find them. I have started reading them.

RR

 

[ibglowin]

All very good articles plus the price is right. I have them all printed out and put into three ring binders.