| Not official USP-NF text | ||||
|---|---|---|---|---|
| DIPHENHYDRAMINE HYDROCHLORIDE | ||||
| PF | LGS# | Brand | Type of Test | Additional Information |
| 12(1) | L1 | Nucleosil C18 | Assay | 15-cm, 5-µm |
| 12(1) | L1 | Partisil 10 ODS-3 | Assay | Alternative column. |
| 13(4) | L10 | ZORBAX CN | Assay and Identification | NULL |
| 37(3) | L7 | LiChrosphere RP-Select B | Organic Impurities | 4.6 mm x 25 cm, 5 µm. |
| 16(3) | G27 | None Cited | Organic volatile impurities | See Method I  467 |