Table 2.
Elution program for the fingerprint of Poria.
| t/min | A/% (acetonitrile) | B/% (0.1% phosphoric acid aqueous solution) |
|---|---|---|
| 0 | 50 | 50 |
| 5 | 55 | 45 |
| 12 | 60 | 40 |
| 15 | 65 | 35 |
| 19 | 70 | 30 |
| 25 | 75 | 25 |
| 30 | 75 | 25 |
| 35 | 100 | 0 |
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