Editing Sulfite
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Sulfite is available in powdered form as sodium metabisulfite and potassium metabisulfite, and also in tablet form with the brand name Campden. These products are not entirely interchangeable, so it's important to note their differences when selecting a product. Neither potassium nor sodium affect the action of the sulfite, but they can have other effects. | Sulfite is available in powdered form as sodium metabisulfite and potassium metabisulfite, and also in tablet form with the brand name Campden. These products are not entirely interchangeable, so it's important to note their differences when selecting a product. Neither potassium nor sodium affect the action of the sulfite, but they can have other effects. | ||
*Sodium metabisulfite (Na<sub>2</sub>S<sub>2</sub>O<sub>5</sub> also known as Na-meta or SMS) | *Sodium metabisulfite (Na<sub>2</sub>S<sub>2</sub>O<sub>5</sub> also known as Na-meta or SMS) is 67% SO<sub>2</sub> by weight. The [[sodium]] can affect flavor. | ||
*Potassium metabisulfite (K<sub>2</sub>S<sub>2</sub>O<sub>5</sub> also known as K-meta or KMS) | *Potassium metabisulfite (K<sub>2</sub>S<sub>2</sub>O<sub>5</sub> also known as K-meta or KMS) is 58% SO<sub>2</sub> by weight. The [[potassium]] is flavor neutral, so it is generally preferred in wine making. Potassium can also help some wines by precipitating with tartrate salts (see [[adjusting acidity in wine]]). However it may be less favorable in beer brewing because high levels of potassium are known to inhibit enzymes during the mash. | ||
*Campden tablets come in different strengths and can be either sodium or potassium metabisulfite. If you use tablets, be aware of what form and strength they are. | *Campden tablets come in different strengths and can be either sodium or potassium metabisulfite. If you use tablets, be aware of what form and strength they are. | ||
*Sulfur discs or sticks can be burned to treat oak [[barrels]]. (The use of these products is not covered in this article.) | *Sulfur discs or sticks can be burned to treat oak [[barrels]]. (The use of these products is not covered in this article.) |