Not official USP-NF text
DYPHYLLINE AND GUAIFENESIN ORAL SOLUTION
PF LGS# Brand Type of Test Additional Information
14(5) L1 Hypersil-ODS Assay and Identification 15-cm; also a guard column with the same packing.
14(5) G20 None Cited Content of . . . . . . . . Contento of alcohol.
14(5) S1AB Gas Chrom Q Content of . . . . . . . . Content of alcohol.