Thermo Scientific TRACE GC Ultra Maintenance And Troubleshooting Manual page 155

Clean or Replace the Liner
15. Tighten the liner cap using the screwdriver
provided with the GC.
16. Remove the septum from the septum holder
using a non-metallic sharp tool.
17. Insert a new septum into the septum holder.
CAUTION Use tweezers to avoid touching
the septum with your fingers.
Maintenance and Troubleshooting Manual
Chapter 9
Maintaining a PTV Injector
155