I accedently placed too much potassium metabisulfite in my six gallon carboy of Sangiovese . I put 1/2 teaspoon per gallon. What can I do at this point. Can I blend it with another wine not yet sulfited? Please help!!!!
the dosage is 1/4 tsp per 5 gallon. 1/2 teaspoon per gallon I really dont know if you will get that much back down. But yes blending with more juice will help. You might try blending it in half and trying some peroxide.
This is going to sound really stupid, but I have to ask. Would time help this? If he added this on his 1st racking and then didn't add any more on his 2nd, and third. Would it bring it down?
The problem is he is at a level that is so high it will affect yeast. They will never get started. Now free sulphite will escape over time but some of it will attach itself to the wine. I do know someone put 2 tblsp in a 5 gallon batch last year. He splashed racked it and then used the maximum dosage of peroxide and got it to ferment. I have not heard back to find out how it tasted, but he did get it to start fermenting.
If using peroxide, do take care. It takes the oxygen out of the SO2. Use too much and it will take oxygen from the wine as well. That will remove all protection and the wine will be undrinkable.
As a guide ....
Test the SO2 level. Then,
For every 10-PPM of sulfite to be removed in 6 gallons of wine, add 4.2 ml of hydrogen peroxide (get it from a drug store). Use a new bottle of 3% USP-grade hydrogen peroxide. Measure it out very carefully so you use exactly the right amount. Leave for a day before re-testing.
Bob1 .... would it be possible to lower the SO2 just a bit and then use a high-tolerance yeast? Peroxide scares me.
ps. I seem to remember reading somewhere that if you have more than 100ppm of SO2 then you might as well give up
He is way over 100 that is why I said he might not have any luck. Its been a while but if memory serves 1/4 tsp per 5 gallon is 50 ppm. What it equates to as free so2 i dont remember. He is 10 times the proper dosage. Its been a year since we went through this so I would have to back myself to get all the info down proper. But at that level I just think it is all an experiment now. that is what the fellow did last year.
What is confusing is the lable on the Kmeta bottle. One measurement for sanitizing (3T/gallon?) and then 1/8 per gallon for 100ppm. I have been lucky I have been using campden, I bet I would have done that at least once!!
that is correct but if you make the sanitizing solution you can use 1/2 tsp of it per gallon.