Antibiotic Name | Content (μg/table) | Antibacterial ring diameter(mm) | ||
---|---|---|---|---|
R | I | S | ||
Ampicillin | 10 | 20 | —— |  ≥ 17 |
Penicillin | 10 |  ≤ 19 | 20–27 |  ≥ 28 |
Chloramphenicol | 30 |  ≤ 12 | 13–17 |  ≥ 18 |
Ofloxacin | 5 |  ≤ 12 | 13–15 |  ≥ 16 |
Tetracycline | 30 |  ≤ 14 | 15–18 |  ≥ 19 |
Doxycycline | 30 |  ≤ 12 | 13–15 |  ≥ 16 |
Azithromycin | 15 |  ≤ 13 | 14–17 |  ≥ 18 |
Erythromycin | 15 |  ≤ 13 | 14–22 |  ≥ 23 |
Gentamicin | 10 |  ≤ 12 | 13–14 |  ≥ 15 |
Kanamycin | 30 |  ≤ 12 | 13–14 |  ≥ 15 |