Biological media bases, also known as culture media bases or basal media, serve as foundational formulations for preparing culture media in microbiological and cell culture applications. These bases provide essential nutrients, minerals, and a supportive environment for the growth of microorganisms or cells. Biological media bases are versatile and can be customized by adding specific supplements or adjusting conditions to meet the nutritional requirements of different microorganisms or cells. Researchers choose media formulations based on the specific needs of their experiments and the characteristics of the organisms being cultured.