| Not official USP-NF text | ||||
| HYOSCYAMINE SULFATE | ||||
| PF | LGS# | Brand | Type of Test | Additional Information |
| 31(4) | L1 | AQUASIL C18 | Chromatographic purity | 4.6 mm x 10 cm, 3 µm, manufacturer Thermo Electron |
| 16(3) | G27 | None Cited | Organic volat. impurities | See Method I  467 |