Pure Polyvinylpolypyrrolidone (PVPP).
Preventive and curative treatment of oxidation in wine and must.
The larger form of PVPP (particle diameter 140 um) will settle much easier and has better lees compaction than it’s lighter weight counterpart, Polyclar V.
Dosage rates reflecting current typical usage are shown below. The exact amount of stabilizer required is dependent upon the wine type, raw materials and process conditions in the winery. Ashland and its local distributors can offer advice for individual winery regimes.
Typical Dosage Rates of Polyclar V and VT Stabilizers
Wine Type/Polyclar V stabilizer Preventative Treatment/Polyclar V stabilizer Remedial Treatment
USA Regulation 27 CFR 24.246 Specific TTB Limitation: 60.0 lb/1,000gal (7,190ppm)
• White: 10–25 g/hl / 10–60 g/hl
• Rosé/Blush: 10–30 g/hl / 10–60 g/hl
• Red: 5–10 g/hl / 5–20 g/hl
• Sparkling: 5–40 g/hl / 5–60 g/hl
• Fortified: 10–50 g/hl / 10–60 g/hl
Wine Type/Polyclar VT stabilizer Preventative Treatment/Polyclar VT stabilizer Remedial Treatment
• White: 15–30 g/hl / 15–70 g/hl
• Rosé/Blush: 15–40 g/hl / 15–70 g/hl
• Red: 5–15 g/hl / 5–20 g/hl
• Sparkling: 8–50 g/hl 8–70 g/hl
• Fortified: 12–60 g/hl 12–70 g/hl