Citric Acid - For home canning tomatoes. The university food safety sites, USDA, and the makers of Ball canning products, all recommend adding citric acid for home canning of tomato products.
Mrs. Wages Citric Acid will increase the acidity of home canned tomatoes when prepared by the boiling water process. Contents of this package will process approximately 50 quarts of tomatoes.
Ingredients: Citric Acid, Silicon Dioxide (Anticaking Agent).