GIFSQ Tools · Module 09 — Fruits, Vegetables, Beverages & Plant Foods · Tool 172 of 500
Carbon dioxide for a carbonated beverage. Enter the target carbonation in volumes, the temperature and the batch size to get the CO2 mass and the equilibrium pressure.
Try sample values — fills the form with the worked example below.
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CO2 needed (g)
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Equilibrium pressure (psig)
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Equilibrium pressure (psia)
Equation: CO2 mass = volumes × 1.96 g per L × batch litres. Absolute pressure (psia) = volumes × (10.5 + 0.35 × temperature in °C). Gauge pressure (psig) = psia − 14.7.
Method: Henry’s law carbonation chart approximation (ASBC carbonation tables); 1 volume of CO2 = 1.96 g per L at 0 °C and 1 atmosphere.
Assumptions: The beverage is at equilibrium with the headspace gas; the chart approximation is linear in temperature over −2 to 40 °C.
Limitations: The pressure is a chart approximation, not a certified gauge reading — always confirm with a calibrated pressure gauge; pressure vessels need their own safety checks.
Rounding: CO2 mass to 2 decimal places; pressures to 2 decimal places. Intermediate values are not rounded.
This is a calculation aid, not a laboratory report — confirm against your accredited method before citing a value.
Method: Henry’s law carbonation chart approximation (ASBC carbonation tables); 1 volume of CO2 = 1.96 g per L at 0 °C and 1 atmosphere.
Assumptions: The beverage is at equilibrium with the headspace gas; the chart approximation is linear in temperature over −2 to 40 °C.
Limitations: The pressure is a chart approximation, not a certified gauge reading — always confirm with a calibrated pressure gauge; pressure vessels need their own safety checks.
Rounding: CO2 mass to 2 decimal places; pressures to 2 decimal places. Intermediate values are not rounded.
This is a calculation aid, not a laboratory report — confirm against your accredited method before citing a value.
Worked example: 100 L at 2.5 volumes and 4 °C. CO2 = 2.5 × 1.96 × 100 = 490.00 g; absolute pressure = 2.5 × (10.5 + 1.4) = 29.75 psia; gauge = 29.75 − 14.7 = 15.05 psig.
Enter values above to see results.
One volume of CO2 is one litre of gas at 0 °C and 1 atmosphere dissolved in one litre of beverage. Soft drinks are usually 2.5–4.0 volumes. Tool 172 of 500 — GIFSQ
