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Correction factors for different instruments and chromatographic columns.
| Instrument | Chromatographic column | Emodin monemethyl ether | Physcion-8-O-β-D-glucopyranoside | Emodin-8-O-β-D-glucopyranoside |
|---|---|---|---|---|
| SHIMADZU LC2030 3D HPLC | Phenomenex C18 | 1.09 | 0.49 | 0.44 |
| SHIMADZU C18 | 1.09 | 0.49 | 0.44 | |
| Waters e2695 HPLC | Phenomenex C18 | 1.09 | 0.47 | 0.45 |
| SHIMADZU C18 | 1.08 | 0.47 | 0.42 | |
| Average value | 1.09 | 0.48 | 0.44 | |
| RSD (%) | 0.75 | 2.41 | 2.88 |
