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Beer Stabilization (continued)
Beer Stabilization (continued) NALCO Nalco 1072 – ( Kieselsol or SilicaSol ) Nalco 1072 kieselsol is a liquid colloidal suspension of silicon dioxide, which is extremely effective in chill- proofing and clarifying beer. Nalco 1072 promotes the formation of compact sediment cakes at the bottom of the tank, enhancing the separation and filtration process of the beer. Nalco 1072 is a ready-to-use solution that offers convenience in use.
BASF Divergan ® F and Divergan ® RS PVPP (Polyvinylpolypyrrolidone) Manufactured by BASF, Divergan F is used throughout the world to stabilize beer against chill haze. BASF’s unique polymerization process produces the purest PVPP, which more selectively adsorbs the polyphenols that can cause stability issues in beer. There is evidence that Divergan F also helps to stabilize flavor through the reduction of flavonoid polyphenols, which are particularly prone to polymerize into products of higher molecular weight and potential bitter flavor. Divergan F works quickly, and its short contact time means it can be dosed inline or through a batch method. Divergan RS is a regenerable PVPP, which works in the same manner, but offers some economies to larger facilities that are set up to regenerate it.
Nalco 1072 / KICK Carrageenan Customer Testimonial “KICK is where our clarification starts and that is in the brewhouse and then Nalco and the fermentation tank really helps to drop that beer out nice and clear, so they are a very powerful duo...”
Particle Size : ~ 8 nm Dose Rate: 100-2000 ppm Contact Time: ~ 8-24 hrs Sizes: 5 USG pails, 55 USG polydrums
Jim Cibak, Brewmaster Revolution Brewing - Chicago, IL
Nalco 1072 Product Performance and Application Product performance and competitive analyses were completed in low (American Wheat) and high gravity (IPA) fermentations. All products were dosed at the completion of primary fermentation. The final beer chemistry and product summary is shown in the tables below.
Micrograph of Divergan ® F (PVPP)
Fining Efficiency Nalco 1072 - High Gravity NTU
500
Particle Size: ~ 50 um Dose Rate: Beer up to 65% malt
400
100 PPM 250 PPM 500 PPM 1000 PPM 2000 PPM Control
300
Alone: 10-30 g/hL (~2.5-7.75 lb/100 US bbl) With Silica: 10-20 g/hL (~2.5-5.0 lb/100 US bbl)
200
Beer Gravity
ABV
pH
IBU
Final Plato
100
Low Gravity
3.92
4.32
13.74
1.9
Dose Rate: Beer more than 65% malt
0
High Gravity
7.64
4.31
19.66
2.9
Dosing of Stabilizers • Inline Dosing: The kieselsol, hydrogel/xerogel, or PVPP slurries are dosed proportionally into the beer stream by means of a metering pump. The products are allowed to react with the beer. Depending upon contact time required for each product, a buffer tank may be utilized. • Batch Dosing: Add the kieselsol, hydrogel/xerogel, or PVPP slurries into the product while filling the finishing tank. Add the stabilizing agent proportionally during the fill or as a single shot method through the spray ball arm. Once the stabilizing agent has reacted with the respective protein or tannin, it will settle to the bottom of the tank as sediment. Settling times vary due to tank geometry and stabilizer/ protein/tannin complex size. Alone: 25-40 g/hL (~5-10 lb/100 US bbl). With Silica: 10-30 g/hL (~2.5-7.75 lb/100US bbl) Preparation: Mix with deoxygenated water at a 10% w/w ratio. The use of a CO2 sparger in the slurry water will help to deoxygenate the water. Agitate slurry for 1-2 hours prior to addition. Contact time: 5 minutes Polyphenol removal effectiveness: 55% of mass Pack Size: 44 lb (20 kg) drum
0
1
2
3
4
5
24
Time (Hrs.)
Fining Efficiency Nalco 1072 - Low Gravity NTU
500 120 100
100 PPM 250 PPM 500 PPM 1000 PPM 2000 PPM Control
80 60 40 20 0
0 1 2
3
4
5 6
7 24
Time (Hrs.)
• For the application of Nalco 1072 in both high and low gravity beers, all dosage rates effectively reduce NTU and achieve a clearer sample compared to the control • There is a correlation between product efficiency and contact time. A lower dosage can be used to achieve target clarity over a longer period, while a higher dosage can achieve the same clarity in a shorter time. • For commercial applications dosage optimization trials are recommended to determine ideal dose and contact time. Contact your technical rep for more info.
• Removal from Beer: Stabilizers are removed from beer via centrifugation or filtration.
16 2026 - 2027 Gusmer Enterprises, Inc. Brewing Products Catalog
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