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Potassium Bisulfite per oz.

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Used to retard yeast activity, wine and champagne yeasts are highly tolerant of this and sodium metabisulfite, but wild yeasts, molds and acetobactar are not.
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  • Used to retard yeast activity, wine and champagne yeasts are highly tolerant of this and sodium metabisulfite, but wild yeasts, molds and acetobactar are not. Also effective as an anti-oxidant. Can be used in smaller concentrations in the wine, and in larger concentration to clean equipment. The primary usage of potassium metabisulfite is addition to the grapes or wine, when the sodium in sodium meta is not desirable for health reasons.

    There are 3 common form of usage; a stock solution, pure powder, and Campden tablets. a 10% stock solution is made by adding 1 oz of the powder to 8 fluid oz of water. Mix well and store in a tightly capped bottle. One teaspoon of this solution provides 75 ppm of SO2 in 1 gallon of wine. It will last for a few months if kept closed.

    Pure powder can be used when the large quantity of grapes or wine makes a stock solution impractical. Use 1/4 oz to 10 gallons of must or wine to obtain 75 ppm of SO2.

    Campden tablets are potassium meta with a binder compressed into a tablet. they perform the same function, but are conveniently pre-measured. 1 tablet in 1 gallon provides approx 65 ppm of SO2.

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