Tryptic Soy Broth is a general-purpose liquid enrichment medium used in qualitative procedures for the sterility test and for the enrichment and cultivation of aerobic microorganisms that are not excessively fastidious.

• Supports the growth of a wide variety of microorganisms
• Enzymatic digests of casein and soybean meal provide amino acids and nitrogen
• Lack of glucose means this mixture is low in carbohydrates

Growth in broth media is indicated by the presence of turbidity, specks, or flocculation in the medium while an uninoculated control remains clear and without turbidity after incubation.