Not official USP-NF text
ERYTHROMYCIN
PF LGS# Brand Type of Test Additional Information
21(2) L21 PLRP-S 1000A Assay and Limit of . . . . Limit of related substances. 4.6 mm x 25 cm, 1000 A, manuf. Polymer Lab.
21(2) L21 PSDVB Assay and Limit of . . . . Limit of related substances. 4.6 mm x 25 cm, 1000 A, manufacturer Polymer Labs.