|Citric acid (monohydrate)||10.5 g|
|Double distilled water: add to final volume of 1 liter|
Dissolve citric acid in 900 ml distilled water. Adjust pH to 4.0 with 6 M NaOH and dilute to 1 liter. Store in refrigerator.
Original Source: Bacteriological Analytical Manual, 8th Edition, Revision A, 1998.