It is known that approximately 50% of all clinical isolates and 80% of Gram-negative bacilli are from the family Enterobacteriaceae; the most common of which is Escherichia coli. Most Enterobacteriaceae can be recognized by their reactions to a few chemical compounds. M.O.T. discs provide the tests (ONPG, Indole, MUG and Indol-pyruvic acid) needed to identify approximately 80% of such organisms, the others requiring further testing.

M.O.T. discs are sold 50 per bottle.

The following items are also required but not provided:

• 24 hour growth on media
• Small non-fluorescent test tubes
• Microbiology loop or needle
• Distilled water, neutral pH
• Long-wave fluorescent light