Adjust pH Naturally and Precisely with Oenodia STARS® Technology
Traditional pH adjustment tools like tartaric acid and potassium carbonate often lack precision and can alter wine flavor, especially after fermentation. Oenodia’s STARS electrodialysis process is a smarter way to fine-tune pH, enhancing flavor, color, and SO₂ performance.
Why Adjust Acidity?
STABILITY
ENHANCE SO₂ EFFECTIVENESS
Sulfur dioxide is most effective within a specific pH range to protect wine from microbes and oxidation. When pH>3.65, its effectiveness drops, requiring higher free SO₂ levels. Lowering pH helps maintain wine stability with less intervention.
SENSORY
ADJUST FLAVOR AND COLOR
pH plays a key role in a wine’s sensory profile and visual appeal. A lower pH can sharpen flavor balance, reduce flabbiness, and enhance freshness. pH also influences color, especially in reds and rosés. pH adjustment is a natural way to shift color.
FLEXIBLE TIMING
Can be used in the juice phase, post-fermentation, and pre-bottling.
ALL WINES
Suitable for whites, reds, rosés, and sparkling bases.
RENT OR PURCHASE
With options to rent or purchase units, we can work with wineries of all sizes.

