Not official USP-NF text
FENTANYL TRANSDERMAL SYSTEM
PF LGS# Brand Type of Test Additional Information
34(2) L1 Microsorb C18 Assay and Drug release Drug release Test 1. 4.6 mm x 15 cm, 5 µm.
34(2) L7 Inertsil C8 Drug release Drug release Test 2. 4.6 mm x 25 cm, 5 µm.
34(2) L10 ZORBAX CN Related Compounds and Chromatographic Purity 6.0 mm x 4 cm, 3 µm.