Not official USP-NF text
FUMARIC ACID
PF LGS# Brand Type of Test Additional Information
0(0) L17 Aminex HPX-87H Limit of . . . . . . . . . Limit of maleic acid. 7.8 mm x 30 cm, 9µm.
13(1) L17 Polypore H Limit of . . . . . . . . . Limit of maleic acid.
17(2) G43 None Cited Organic volatile impurities See Method V 467