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BASF Divergan ® F (PVPP) Gusmer is a major distributor of Divergan ® F (PVPP) to the wine industry. Manufactured by BASF, Divergan F is used throughout the world for fining must and wine. BASF’s unique polymerization process produces the purist polyvinylpolypyrrolidone, which is completely insoluble in must and wine. Divergan F is selective in binding phenolic species such as catechins and leucoanthocyanidins with minimal effect on flavor and aroma. It is frequently used to stabilize the delicate color in rosé and to help prevent “pinking” in certain white wines, thus ensuring a proper shelf life. Main Uses for Divergan F • C orrect and stabilize color in wine, particularly white and blush wines • Help prevent “browning” and “pinking” • Freshen slightly oxidized wines, reduce astringency and bitterness in red and white wines • Unmask fruity character, improve mouthfeel and finish of wine • Treat press juice prior to fermentation to reduce astringency and bitterness Divergan F can be added directly to must or wine in a powder form or as a 5% w/w slurry in water (1 pound of Divergan F per two gallons of water). Typical dose rates are 0.5 to 4 pounds per 1,000 gallons with a contact time of 20 to 60 minutes and sufficient mixing. Divergan F is available in a 20 kg package. Micrograph of Divergan ® F (PVPP) Cellar Chemicals Lab Chemicals Chemical / Use Sizes Full Pack Ascorbic acid (for treating H 2 S) Full Sack Only 55 lbs Bentonite (multiple uses) KWK Krystal Klear Full Sack Only 50 lbs Carbon (removes color/odor problems) S51 (deodorizing) Full Sack Only 40 lbs Eno Anti-Chromos Full Sack Only 33 lbs ALL CARBON SHIPS BY TRUCK ONLY Citric acid Full Sack Only 50 lbs Diammonium phosphate (nitrogen addition) Full Sack Only 50 lbs Gelatin (fining agent) Bronze Sheet 1 lb units Granular 100 Bloom Full Sack Only 50 lbs Gelsol (liquid gelatin) Full Pail Only 55 lbs Isinglass 1 lb bags Flocced 1 kg and 5 kg Inquire for Drifine (20-min prep time) 1 kg and 5 kg larger qty Kolorfine ® (caseinate fining agent) Full Sack Only 50 lbs Malic acid (acid addition) Full Sack Only 50 lbs Potassium bitartrate (for cold stabilization) Full Sack Only 55 lbs Potassium carbonate (acid reduction) Full Sack Only 55 lbs Potassium metabisulfite (SO 2 addition, cleaning) 1 kg and 25 kg 55 lbs Potassium sorbate (bottling stability) Full Sack Only 50 lbs PVPP (Divergan ® F) Full Drum Only 20 kg Soda Ash (sodium carbonate for cleaning) Full Sack Only 50 lbs Tartaric acid (acid additions) Full Sack Only 55 lbs TSP chlorinated (for cleaning) Full Sack Only 50 lbs Nalco 1072 colloidal silica *50 lb Pail (to settle gelatin fining and to clarify) * Also available in 555 lb drum & 275 gal totes *[HM] - Hazardous Materials Discounts available for larger quantities, please inquire for pricing. Product offering subject to change without notice. Chemical Comments Shelf Life Size Copper Sulfate & Other Sulfide Chemicals 10% solution 1% solution For treating sulfide odors see Sulfide Detection/Treatment Kit (15 ml / 1,000 gal = 0.1 ppm as Cu) (150 ml / 1,000 gal = 0.1 ppm as Cu) 2 years 2 years 1L 1L Hydrogen Peroxide 30% *[HM] For A/O SO 2 test 1 year in fridge pH Buffers pH 4.00 or 7.00 Color coded, prepared to NBS standards. 6-12 months 1L Phenolphthalein 1% *[HM] Indicator for TA test and VA test Phosphoric acid *[HM] 25% For A/O SO 2 test indefinite 1L Ripper SO 2 Test Iodine 0.02 N Sodium hydroxide 1 N *[HM] VERY light sensitive. Protect from light. VERY caustic. Caution! stan- dardize often 1 year 1L 1L Starch 1% Sulfuric acid 25% *[HM] Indicator for Ripper SO 2 test VERY corrosive. Caution! until moldy indefinite 1L 1L Sodium hydroxide For titration, specify strength. 0.01 N for A/O SO 2 test 0.067 N for VA & TA tests 0.10 N for TA tests 1 year 1L
125 ml, 500 ml
indefinite 250 ml
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