Not official USP-NF text
ARSANILIC ACID
PF LGS# Brand Type of Test Additional Information
21(1) L1 YMCbasic Limit of . . . . . . . . . aniline; 4.6-mm x 15-cm, 5-µm, base-deactivated
21(1) L1 YMCbasic Limit of . . . . . . . . . o-arsanilic acid; 4.6-mm x 15-cm, 5-µm, base deactivated