Potassium Metabisulphite – Food Grade (1kg) – Product of Germany

Potassium metabisulfite is one of the most important winemaking compounds.

It is an antioxidant and bactericide that releases sulfur dioxide into wine must.

Use 1/4 teaspoon per five gallons to add 50 ppm.

Or, mix 1/4 pound in 1 quart of water to make a stock solution;

1 teaspoon of stock solution in 1 gallon of must yields 50 ppm sulfur dioxide.