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Injection Ports
• Regular maintenance
required
– Septum
– O-ring
– Liner
– Inlet seal
– Column ferrule
• Why?
– Build up of nonvolatile material in
liner and beginning of column
causes tailing of late eluting
compounds (PAHs), active sites for
acids (PCP, 2,4-dinitrophenol)
Septum
O-ring
Inlet Seal
Column
Ferrule