| Items | Specifications |
| Appearance | white crystal powder |
| Loss on drying | Not more than 4.0% |
| Content of Monensin A and B activity | The percentage of Monensin A activity is not less than 90%. |
| The percentage of Monensin A and B activity is not less than 95% | |
| Assay | ≥800 µg/mg |