The medium which we have adopted to detect
oxidation of carbohydrates and distinguish it
from fermentation has the following composition:
peptone, 0.2 per cent; NaCl, 0.5 per cent;
K2HPO4, 0.03 per cent; agar, 0.3 per cent;
bromthymol blue, 0.003 per cent; carbohydrate,
1.0 per cent; pH 7.1.