free so2 testing

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  1. F

    SC-300 blinks

    I just got SC-300 for Christmas and the unit constantly blinks. Is this normal?
  2. 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...