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2 × 4 Factorial design of microencapsulation of l-Carnitine base studying the effects of polymer viscosity grade and drug/polymer ratio.
| X2 (drug/polymer ratio) |
|||||
|---|---|---|---|---|---|
| 4:1 | 3:1 | 2:1 | 1:1 | ||
| X1 (polymer viscosity grade) | EC N 100 | F10 | F4 | F11 | F12 |
| Ethocel Std. 20 | F13 | F14 | F15 | F16 | |
