Pumping an Agilent 5977 GC/MS back down after maintenance is the moment you find out whether everything was put back together correctly. In this video, I show the pump-down process after the MS has been opened for maintenance. I go through: • Closing the analyzer and establishing the initial vacuum • Starting Pump Down in Vacuum Control • Watching the foreline pressure decrease • Monitoring the diffusion pump, source and quadrupole status • Confirming the system reaches READY

In this hands-on video, I show how I replace the split/splitless inlet EPC pneumatic module on an Agilent 6890 GC. This repair involves going beyond routine inlet maintenance and accessing the internal pneumatic system of the gas chromatograph. In the video, I cover: • Opening the GC and accessing the EPC module • Disconnecting the pneumatic and electrical connections • Removing the old split/splitless inlet EPC module • Installing the replacement module • Reconnecting the sy

In this hands-on GC maintenance video, I show how I replace the top shell weldment on an Agilent 6890 split/splitless inlet. The top shell weldment is part of the inlet assembly and can require replacement when it becomes damaged, contaminated, or no longer performs reliably after repeated maintenance. In this video I cover: • Accessing the split/splitless inlet • Removing the existing top shell weldment • Disconnecting the associated inlet components • Installing the replace