Potassium Metabisulfite powder is a wine additive used to kill wild yeast and bacteria, and it acts as a potent antioxidant, protecting both the color and flavors of wine.  "Meta" is a workhorse anti-oxidant and source of sulfur dioxide that comes as close to being mandatory use as any additive in winemaking.

1/4 teaspoon per 5 gallon batch yields about 40 to 45 ppm.

Available in several sizes.  Select your size, or click here for a bulk 55 lb quantity of potassium metabiulfite.

Replace every 12 to 18 months and keep dry and out of direct sunlight.

Warning: Adding meta AFTER a wine has been cold stabilized may render the wine unstable once again.