+3 Citric Acid 2oz 400000002002 $2.49 In stock Quantity: 1 Add to Bag Product Details 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 acidity at a ratio of 0.1% for each teaspoon per gallon. Adding too much, however, will create a very tart flavor. Save this product for later Favorite