title: Occurrence of negative time lags in permeability studies of solutes through polyethylene.
mesh_terms: D002855:Chromatography, Thin Layer; D007700:Kinetics; D010539:Permeability; D011095:Polyethylenes; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet; D013997:Time Factors
chemical_list: D011095:Polyethylenes; D012996:Solutions