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Scotzin Brothers

Central PA's largest wine making and home brew supply shop


Kerry Biofine P019 Fining Agent


Kerry Biofine® P019 is a powdered preparation of purified isinglass (a type of collagen). At the pH of beer, the collagen of Biofine® P019 has a positive charge which reacts with the negatively charged yeast cells and suspended solids, prompting flocculation. This accelerates the sedimentation process and produces a more compact, clearly delineated sedimentary layer at the bottom of the beer. The collagen binds with the yeast and other colloidal material in the beer, and is removed with the sediment. It does not remain in the beer. Treatment makes clarifying beer quick and easy, significantly improves chill haze stability, and can also improve head retention in some beers.


Recommended UsageTo dose 5 gallons of beer, mix 0.025 oz of Biofine® P019 powder with 5 fluid oz of very cold water (ideally <40°F). Stir continuously for 30 min. Refrigerate for 2-4 hours, then stir for another 15 min. Do not allow the solution to rise above 60 °F, or the collagen will denature. Use of a blender is ideal, and can sometimes reduce necessary mixing to a single 15 min. step. Dose 5 gallons of beer with 1.9-4.5 fluid oz. of the solution, in a manner that allows effective mixing with the beer.


This product is being discontinued - limited quantities available.

Your homebrew supply and winemaking store. Scotzin Brothers has been providing brewers and winemakers with quality home brewing and wine making equipment and ingredients for over 40 years. We have all the equipment and ingredients you need for wine and beer making including beer recipe kits, wine ingredient kits and equipment kits. Stop in and meet our knowledgeable, friendly staff. Orders are shipped within 24 hours of ordering on weekdays so you receive your supplies fast.