Boric acid is a weak, monobasic Lewis acid of boron with mild antiseptic, antifungal, and antiviral properties. It is employed in various pharmaceutical and cosmetic products for its buffering and antimicrobial characteristics.​

Boric acid is used as a buffering agent in culture media and can act as a preservative to prevent bacterial and fungal growth.

not a USP categoty

The United States Pharmacopeia (USP) provides quality standards for biologics to ensure their safety, efficacy, and quality throughout the manufacturing process. These standards assist manufacturers in adhering to regulatory requirements and help safeguard public health by reducing risks associated with biologics.