Racking…
This is the racking after the CuSO4 fining, about a week ago. We racked into 2 14 gallon demijohns, 2 1 gallon jugs, 2 750 mL bottles.
We tried the copper test again, as we stilled sensed some H2S on the nose. I think we are getting more discriminating. We decided pna another bench trial. We did 4 samples, 0.0, 0.1, 0.3, 0.5 ppm CuSO4. There was a clear difference between the control and the 0.5 ppm. We finally settled on 0.4 ppm as the final addition. As I will be out of town next weekend, we decide to do the additon Wednesday evening, and rack sometime when I get back.
- SO2 calulations:
- 9 14 gal demijohns: desired 37 ppm free based on 27 ppm starting: add 9 mL 10% SO2 solution
- 1 gal jugs : desired 37 ppm free based on 27 ppm starting: add 0.7 mL 10% SO2 solution
- CuSO4 calulations:
- 0.4 ppm CuSO4 will be added January 27, 2010
- From MoreWine…0.15mL/gal 1% CuSO4 = 0.1ppm copper
- 14 gal demijohns: Add 8.4ml 1% CuSO4 solution
- 1 gal jugs: Add 0.6ml 1% CuSO4 solution