Dealcoholized Wines (VND): Dealcoholization & Microbiological Vigilance

🎯 Winemaking Goal

Record a partial or total Dealcoholization operation on a finished wine lot (ISO-01 - 26-VND-ROSE), automatically calculate volume contraction (50 hL → 44 hL), update the lot status to Dealcoholized, and display the microbiological vigilance alert when target ABV drops to ≤ 0.5 % vol.

✅ Prerequisites

• The Dealcoholized wines (VND) module is enabled in Settings > Automatic actions.
• Lot 26-VND-ROSE (50 hL dry Rosé at 12.5 % vol) is in tank ISO-01.

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🛠️ Step-by-Step Instructions

Step 1 — Calculate & Save the Dealcoholization Operation

1. Open ISO-01 - 26-VND-ROSE, click Job, and select operation type Dealcoholization:
   • Initial volume (hL): 50 hL (or 44 hL)
   • Initial ABV (% vol): 12.5 % vol
   • Target ABV (% vol): 0.4 % vol
   • Method: choose Reverse osmosis, Vacuum distillation, or Spinning cone column.
   • Volume loss (optional, hL): 6 hL.
2. The calculator immediately displays:
   • Dealcohol. Dealcoholized wine: -6.0 hL → Vf 44.0 hL (Reverse osmosis)
   • Red warning banner: Microbiological vigilance: monitor free/active SO₂ and pH (ABV ≤ 0.5 % vol).
3. Keep Update lot volume (50 → 44 hL) checked and click Save.