Consult the instructions for your activity or recipe to see how much citric acid they indicate you need to use for your project. Increase the amount of citric acid if you plan to make multiple batches of a recipe or want to have an ample amount for repeating the activity. For example, if you plan to use citric acid for cheese-making, and you want to make your own cheese on a regular basis, you will want to buy enough citric acid for multiple uses.
Check for citric acid in the canning section. It is often located near the pectin and other canning ingredients and materials. [3] X Research source Look for citric acid under the name sour salt in the kosher section or in the spice aisle. [4] X Research source
Plan to purchase at least 1 pound (. 45 kg) of citric acid. Smaller quantities may not be available.
Take into account that shipping costs may make it more expensive to buy citric acid online than at a local restaurant supply or warehouse store. However, online prices are generally more competitive than supermarket prices per ounce.
Anhydrous citric acid is usually used in bath bombs, but the monohydrate form will also work. Unless the project specifies the use of one form over the other, either one should work.
Food Chemical Codex (FCC)- food grade American Chemical Society (ACS) grade- the substance meets the standards set forth by the ACS for reagent chemicals in their publication. [7] X Research source United States Pharmacopeia (USP) grade- a substance that meets the specifications in the “Reagents, Indicators and Solutions” section of the USP.