Not official USP-NF text
BISMUTH SUBSALICYLATE
PF LGS# Brand Type of Test Additional Information
22(4) L1 None Cited Limit of . . . . . . . . . Limit of free salicylic acid. 5 µm.
22(4) L1 None Cited Limit of . . . . . . . . . Limit of free salicylic acid; guard column, 3.2-mm x 1.5 -cm, 5-µm