LIQUID ISINGLASS 2oz Pre-Mixed for Protein Haze


Isinglass is a natural fining agent that has long been a popular choice for clarifying beers, wines and any other fermented beverages. This is the easy to use pre-mixed liquid and it provides results in just 2 to 3 days.  Isinglass has been used in brewing since at least the 18th century.  It is a natural clarifying agent for beer, wine and other fermented beverages.  It accelerates yeast sedimentation and reduces protein haze.

14 in stock



Isinglass can dramatically accelerate the sedimentation of yeast cells after fermentation and create clear beer. Isinglass is a natural collagen isolated from the swim bladders of topical fish. The isinglass molecule is a triple helix structure of amino acids with an overall net positive electrical charge at beer pH. When added to beer, it attracts negatively-charged yeast cells creating large aggregates that sediment more quickly. It is also effective at removing sub-micron protein haze particles. Clarification will vary with differences in yeast strains, recipe or fermentation factors.

Isinglass is a great, natural choice to clarify unwanted yeast or protein hazes in finished beer. Ensure that fermentation is complete before fining and that an adequate amount of yeast remains present in the finished beer it if requires bottle conditioning.  Isinglass is a substance obtained from the dried swim bladders of fish. It is a form of collagen.

  • Natural clarifying agent for beer, wine and other fermented beverages
  • Accelerates yeast sedimentation
  • Reduces protein haze
  • Easy-to-use, pre-mixed liquid

Additional information

Weight 3 oz
Dimensions 2 × 1 × 1 in










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