Not official USP-NF text
ISONIAZID
PF LGS# Brand Type of Test Additional Information
10(2) L1 Alltech 600RP Assay 5-µm
10(5) L1 MicroBondapak C18 Assay Alternative column. 5-µm.
16(4) G27 None Cited Organic volatile impurities See Method I 467