Calculators
SO2 and gravity tables
The free SO₂ that reaches each molecular target at each pH, and gravity beside Brix, sugar and potential alcohol, to read off at the bench.
Bench arithmetic, with the working shown. Nothing here is saved, and none of these numbers is a figure for a label. Each one comes from a working formula with its assumption stated. Bench-trial anything before it goes into a tank.
Free SO₂ needed, in ppm, by pH
Each column is a target of molecular SO₂: 0.5, 0.625, or 0.8 ppm. Find your pH down the left, then read across to the ppm of free SO₂ that reaches the target.
pH0.5 ppm molecular0.625 ppm molecular0.8 ppm molecular
3.081013
3.1101316
3.2131620
3.3162026
3.4202532
3.5253140
3.6313950
3.7394963
3.8496279
Gravity, sugar, and potential alcohol
GravityBrixSugar g/LPotential alcohol
1.12028.131416.6%
1.11025.928815.3%
1.10023.826214.0%
1.09522.724813.4%
1.09021.623512.7%
1.08520.522212.1%
1.08019.320911.4%
1.07017.118210.1%
1.06014.71568.7%
1.05012.41307.3%
1.04010.01045.9%
1.0307.6784.5%
1.0205.1523.0%
1.0102.6261.5%
1.0051.3130.8%
1.0000.00—
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