| Not official USP-NF text | ||||
| POWDERED ECHINACEA PURPUREA | ||||
| PF | LGS# | Brand | Type of Test | Additional Information |
| 26(3) | L1 | Prodigy ODS (3) | Content of . . . . . . . . | 4.6-mm x 25-cm, 5-µm, manuf Phenomenex, 15.5% of carbon load, end-capped. Content of total phenols. |
| 26(3) | L1 | Luna C18 | Content of . . . . . . . . | 4.6-mm x 15-cm, 5 µm, manuf. Phenomenex. Content of alkamides |