Bell's Citric Acid Monohydrate Bell's Citric Acid Monohydrate is suitable for culinary use & general household purposes. It may be used in the preparation of jam & other conserves according to recipe, or dissolved in water it will dissolve limescale. For cleaning: add 1 teaspoonful to half a litre of warm water. Allow time for it to act, then rinse thoroughly. Do not mix with bleach or other chemicals.