Not official USP-NF text
ETHAMBUTOL HYDROCHLORIDE
PF LGS# Brand Type of Test Additional Information
28(5) L10 ZORBAX SB-CN Assay 4.6 mm x 15 cm.
0(0) L1 Symmetry C18 Limit of . . . . . . . . . Limit of total steroisomers. 3.9 mm x 15 cm.
16(5) G27 None Cited Organic volatile impurities See Method I 467