Biochemical & Other Tests Aerobes Anaerobes Mycobacteria Arylsulfatase Catalase Iron uptake MacConkey agar w/o crystal violet MacConkey agar w/o crystal violet NaCl tolerance Niacin Nitrate reduction Tellurite reduction Thiophene-2-carboxylic acid hydrazide (TCH) Tween 80 hydrolysis Urease Susceptibilities