Potassium Metabisulphite - 5g to 25kg

Commonly used as a wine equipment sanitizer.

Potassium Metabisulfite is also used as an oxidation preventer and microorganism inhibitor in wine. 

To Sanitize Equipment: Use 4 tsp. powder per 1/2 gal. of water. Requires 5 min contact time, drip dry. To Sanitize Wine before adding yeast: Use 1/2 tsp. powder per 6 gal. of wine.