Hopsteiner ISO-Extract is best utilized by adding this extract at any stage postfermentation. We recommend adding Hopsteiner, ISO-Extract as a 2% to 5% diluted solution, preferably just prior to primary filtration. Alternatively, Hopsteiner ISO-Extract, being a very pure solution of ISO-alpha-acids, can be added directly to a finished beer tank to "top up" the beer bitterness.

Dilution of Hopsteiner ISO-Extract should be made with deicinized, non-carbonated water. Mix thoroughly without aeration. Dilution in this manner prevents changes in pH and avoids formation of insoluble calcium or magnesium salts of ISO-alpha-acids Should a slight haze occur on dilution, this can be reversed by adding a small quantity of potassium carbonate to raise the pH to between 8.0-9.0. The use of softened water is acceptable if deionized water is not available. Do not make the dilution with beer, because the lower pH is sufficient to precipitate ISO-alpha-acids