| Antibiotic | Recommended Stock Concentration | Recommended Working Concentration |
|---|---|---|
| Ampicillin | 100 mg/mL | 100 µg/mL |
| Carbenicillin* | 100 mg/mL | 100 µg/mL |
| Chloramphenicol | 25 mg/mL (dissolve in Ethanol) | 25 µg/mL |
| Hygromycin B | 200 mg/mL | 200 µg/mL |
| Kanamycin | 50 mg/mL | 50 µg/mL |
| Spectinomycin | 50 mg/mL | 50 µg/mL |
| Tetracycline | 10 mg/mL | 10 µg/mL |
*Carbenicillin can be used in place of ampicillin.