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  1. Ignoble Grape

    Testing Free SO2 in Different Carboys

    Hi! Got my fantastic vinmetric this week and spent the morning playing with it. I have 20 gallons Merlot, same vintage, in 4 carboys. In the spirit of science, I went ahead and tested all of them and found that they were all really close in free SO2 ppm, no real varience. Question to the...