Not official USP-NF text
PRIMIDONE
PF LGS# Brand Type of Test Additional Information
35(3) L1 Atlantis C18 Assay and Identification 4.6 mm x 10 cm.
17(3) G43 None Cited Organic volatile impurities See Method V 467
35(3) L1 Chromolith RP-18e Related compounds 4.6 mm x 10 cm.