BHI Agar w/ 3.0% Agar (Brain Heart Infusion Agar w/ 3.0% Agar) is recommended for cultivation of microorganisms when 3.0% agar gel is desired. This is highly nutritious medium that can support luxuriant growth of wide variety of microorganisms. It is a general purpose culture medium used for primary isolation of aerobic bacteria from clinical specimens. Brain Heart Infusion Agar with 3% Agar is used for cultivation of fastidious microorganisms using hard (3%) agar gel.