First racking, Cu fining

We racked the wine off of the gross lees.

  • We racked each container into the bin we used for fermenting, so that the wine would be well mixed.
  • We ended up with ~240 liters of wine.
  • We did a Cu fining bench trial, using a control, 0.5 ppm, and 1.0 ppm as our samples.
    • We chose to go with the 1.0 ppm for the following reasons
      •  Slight improvement of the nose of the 1.0 over the 0.5 ppm.
      • We were worse off than last year, where we ended up doing a total addition of 0.9 ppm.
      • We decided that if it is not too expensive, we will also have  residual copper test done on this wine, after it has been racked again.
    • Addition calculation:
      • 240L of wine
      • 0.389 mL/L 1% CuSO4 solution = 1.0 ppm
      • 0.389 * 240 = 93.4 mL
    • We added 93 mL of 1% CuSO4 solution to the bin, and mixed well.
  • Finally, we pumped the wine back into the following, for a total of ~224 L. This means the measurement scale on the fermenting bin is off a little…
    • 110 L barrel (30 gallon)
    • 50 L barrel (13.2 gallon)
    • 57 L barrel (15 gallon)
    • 1 1 gallon jug (~3.5 L)
    • 1 3/4 gallon jug (~ 3 L)

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