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Molar composition of colistin and meropenem on the surfaces of composite formulations based on theoretical calculation and XPS measurement.
| Formulation | % Theoretical Composition | % Measured Surface Composition | ||
|---|---|---|---|---|
| Colistin | Meropenem | Colistin | Meropenem | |
| Colistin:Meropenem_1:3 | 26.0 | 74.0 | 46.8 | 53.2 |
| Colistin:Meropenem_1:1 | 51.4 | 48.6 | 67.6 | 32.4 |
| Colistin:Meropenem_3:1 | 76.0 | 24.0 | 87.7 | 12.3 |
