| Organism | Clinical Relevance | Source* |
| Gram-negative organisms | ||
| Enterobacter cloacae | Abdominal infections, abscesses, urinary tract infections | Difco (23355) |
| Escherichia coli | Enteric disease, urinary tract infections | ATCC (25922) |
| Klebsiella pneumoniae | Urinary tract infections, pneumonia | Difco (13883) |
| Moraxella catarrhalis | Respiratory tract infections, meningitis | Carolina (154928) |
| Proteus mirabilis | Urinary tract infections | Carolina (155239) |
| Proteus vulgaris | Wound infections, urinary tract infections | Carolina (155240) |
| Pseudomonas aeruginosa | Wound infections, burn infections, pneumonia, urinary tract infections | Difco (27853) |
| Serratia marcescens | Respiratory tract infections, urinary tract infections, conjunctivitis | Difco (8100) |
| Shigella flexneri | Enteric disease, abdominal infections | ATCC (12022) |
| Shigella sonnei | Enteric disease, abdominal infections | ATCC (25931) |
| Vibrio natriegens | Vibrio species, simulant for Vibrio cholera | ATCC 14048 |
| Gram-positive organisms | ||
| Enterococcus faecalis | Urinary tract infections, subacute endocarditis | Carolina (155600) |
| Staphyloccus aureus (MRSA) | Skin infections, wound infections, abscesses, surgical infections, osteomyelitis, enteric disease | ATCC (BAA-44) |
| Staphylococcus epidermidis | Chronic skin infections, bacterial endocarditis from ventriculo-atrio shunts/implants | Difco (12228) |
| Staphylococcus epidermidis | Biofilm forming clinical isolate from medical implant | ATCC (35984) |