Citric Acid 5 Pounds
5 lb Bulk Pack
Citric Acid can be used in sanitizing solutions to lower the pH, which will make the SO2 level more effective. In addition, it can increase the acidity of wine at a ratio of .1% for each teaspoon per gallon. If you add too much, it will create a very tart flavor.
Citric Acid is also used to clean copper at the rate of 1 teaspoon per gallon.