| MSDS | Product | Manufacturer |
| MSDS | O-Cresol | ACROS Organics |
| MSDS | OF Basal Medium | Hardy |
| MSDS | Orange Gaka Acid Orange 10 | Sigma Aldrich |
| MSDS | Orcein | Flinn |
| MSDS | Orcein | Sigma Aldrich |
| MSDS | Oxacillin Sodium Salt Monohydrate | Sigma Aldrich |
| MSDS | Oxytetracycline Hydrochloride | Sigma Aldrich |