Not official USP-NF text
UREA CREAM
PF LGS# Brand Type of Test Additional Information
12(1) L8 Bond-Elute NH2 Assay 1-cm x 7.5-cm, 40-µm sample preparation cartridge.
12(1) L8 Econosphere Amino Assay Alternative column.
12(1) L8 LiChrosorb NH2 Assay Analytical column.
16(6) L1 MicroBondapak C18 Assay analytical column
12(1) L8 RSiL NH2 Assay Alternative column.
12(1) L8 Spherisorb NH2 Assay Alternative column.
16(6) L2 Sep-Pak C18 Assay 5-mm x 2.5-cm sample preparation cartridge