SO2

Question 1

Goal moleculars + free per pH

Answer 1

Whites: 0.8 mg/L (ppm)
Reds: 0.5 mg/L (ppm)

pH 3.0 - 6% of SO2 is in molecular form
pH 3.5 - 2% is molecular
pH 4 - 0.6% is molecular

Question 2

SO2 examples

Answer 2

• After MLF Chateau Ste Michelle hits their barrels with 60ppm and hard bungs. Once a month they top up, stir, and adjust SO2.