Benzoic acid solution is a dilute aqueous solution containing benzoic acid and is used in various scientific applications. It is especially known for the preservation of biological samples, pH adjustment and as a buffer component.

Due to its antimicrobial properties, the solution is particularly suitable for the preservation of samples in the laboratory. It helps inhibit the growth of bacteria, fungi and yeasts and increases the stability of samples during storage and analysis.

Chemically, benzoic acid is a weak organic acid containing a carboxyl group (COOH). In the solution, there is an equilibrium between the undissociated benzoic acid and the benzoic acid anion, which allows the solution to develop its buffering effect and stabilize the pH.

In histology, medical diagnostics and life sciences, benzoic acid solution is used in the preservation of tissue samples, food analysis and pharmaceuticals. It is also used as a buffer component in various biochemical and molecular biology experiments to stabilize the pH of the solution in the desired range and allow the reactions to proceed optimally.