Medium pH indicator Alkaline AcidicEosin Methylene

Blue (EMB)Eosin-Y +

Methylene BlueMaroon

Mannitol Salt Agar (MSA)

Phenol red Red Yellow

MacConkey Agar (MAC)

Neutral Red Pink Yellow

Lysine Iron Agar (LIA)

Bromcresol purple Violet Yellow

Litmus Milk Litmus Blue/Purple Pink/Red

Durham Tube (Sugar

Fermentation Broth)

Phenol red + bromcresol purple

Red Yellow

Citrate Utilization Bromthymol blue Blue Yellow

Triple Sugar Iron Agar (TSIA)

Phenol red Red Yellow