Agilent, 05988-20066, Column nut for MS interface

The Agilent long column nut secures a compatible capillary GC column at the mass spectrometer transfer-line interface. It is a mechanical fitting used with the appropriate long ferrule to maintain a reliable column connection between the gas chromatograph and the heated GC/MS interface. The specified compatibility includes Agilent 5973, 5975 and 5977 mass selective detectors, 7000A/B/C triple-quadrupole systems, and 7200 platforms. The nut is a replacement connection component, not a column, ferrule set, or entire transfer-line assembly. Using the correct ferrule geometry and seating arrangement matters because an imperfect seal can introduce air into the vacuum system and degrade sensitivity. The fitting supports installation, routine column changes, and maintenance of established GC/MS methods.