Light Yellow colored, may have slightly greenish tinge, homogeneous, free flowing powder
Firm, comparable with 1.5 percent agar gel
Basal medium yields amber colored gel, addition of laced blood and tellurite gives brownish red colored, opalescent gel forms in petri plates
Reaction of 4.0 percent W/V aqueous solution is pH 7.8 +/- 0.2 at 25°c
Cultural characteristics observed after an incubation at 35-37°c for 18 –24 hours, with added 50 ml of laced blood and 10 ml of 3.5 percent potassium tellurite solution (FD047)
Description
Hoyle hiveg medium base is a highly selective medium used for the isolation and differentiation of corynebacterium diphtheria.
