Potassium Metabisulfite is a widely used winemaking agent. It effectively kills wild yeast and bacteria. The condition of your grapes and pH levels may vary the amount needed.
This agent helps to clear the way for your yeast, better allowing it to do its job. Sulfites also aid in inhibiting enzymatic browning in white wines, and improves the flavor when used correctly. Metabisulfite does lose potency over time, so you should replace your supply at least annually. If you have some old metabisulfite, it can be used for sanitizing purposes.
Dosage: 1/4 teaspoon per 5 gallons, which yields 50 ppm.
Customer ReviewsWrite a review
Everything was exactly as ordered and the shipment arrived in time for Christmas, even though that's a very chaotic time to get anything shipped. I will definitely buy from them again. Great job on Midwest's part :)
Good product, good price
This potassium metabisulfite works great in a sanitizing solution and as something to protect the wine before and after fermentation. I prefer it over sodium metabisufite.
very good product
Can’t speak for the chemistry but it appears to work well in the wine stabilization and clearing prep stage and as a preserver to facilitate longer storage. I usually put in a 0.25 tsp/23L potassium metabisulfite preserver addition to my clarified wine before bottling and have been able to enjoy produced wines beyond 5 years without any hint of spoilage.