Potassium Metabisulfite (Food Grade)

Potassium Metabisulfite (Food Grade) WINY – ENARTIS

Applications

Potassium Metabisulfite is primarily used as a preservative and antioxidant in food and beverage production. It releases sulfur dioxide, which inhibits microbial growth and prevents oxidation—making it ideal for stabilizing wine, cider, and juices. It’s also used to sanitize equipment and extend shelf life in dried fruits and canned goods.

DOSAGE

In the EU, according to the Reg. (EU) N. 2019/934 the total sulfur dioxide content of wines on their release to the market for direct human consumption may not exceed:

150 mg/L for red wines;
200 mg/L for white and rosé wines;
185 mg/L for quality sparkling wines;
235 mg/L for other sparkling wines.

Regarding wines with sugar content, expressed as the sum of glucose and fructose, of not less than 5g/L, and liqueur wines, please refer to the Annex B of the Regulation here above.

The TTB states that sulfur dioxide content of finished wine shall not exceed 350 mg/L total (limitations prescribed in 27 CFR 4.22). For the countries outside the EU and applications other than wine, please refer to the current laws.

1 g of WINY releases approx. 0.56 g of SO2.