Vineyard Management Blog

What Your Refractometer Isn't Telling You: Sucrose vs. Fructose-Glucose Readings at Harvest

Standard refractometers measure total soluble solids as sucrose-equivalent Brix, but grape juice primarily contains fructose and glucose. This distinction can lead to misjudged ripeness and fermentation issues. This post details how to refine refractometer use and integrate complementary analysis for more precise harvest decisions.