Potassium Carbonate (K?CO?) is a white, water-soluble salt commonly used in brewing and winemaking. It helps adjust pH levels, acts as a buffering agent, and is used in certain styles of beer to modify water chemistry.
Brewing (Water Chemistry Adjustment)
Purpose: Increases alkalinity and raises pH in brewing water, particularly useful for darker beers.
Dosage:
General Range: 0.1–0.5 grams per litter of water.
For pH Adjustment: Start with 0.2 grams per litter and adjust based on water profile.
For Dark Beers (e.g., Stouts, Porters): Up to 0.5 grams per litter may be used if necessary.
How to Use:
Dissolve Potassium Carbonate in a small amount of warm water before adding it to your brewing water.
Always measure pH after adjustments to avoid excessive alkalinity.
Winemaking (Acidity Reduction)
Purpose: Reduces acidity (increases pH) in highly acidic wines.
Dosage:
General Range: 0.4–0.8 grams per litter of wine.
For Minor Acid Reduction: 0.4 grams per litter can reduce titratable acidity (TA) by approximately 0.1 g/L.
Maximum Recommended Dose: 1 gram per litter, as excessive use can cause instability.
How to Use:
Add Potassium Carbonate to wine before fermentation to avoid disrupting yeast activity.
Allow time for precipitation (Potassium Bitartrate formation) and rack off sediment.