The prime functions of inlet liner are to limit sample degradation and improve vaporisation along with correct positioning of syringe needle
The basic problems related with incorrect choice of liner include the higher potential of peak tailing and mass discrimination
The inlet liner volume is recommended to be larger than the amount of sample injected by syringe so as to avoid any reaction with the sample
Injector port liner is suitable to make connection between sample introduction and GC column
Direct type has narrow bore which sustains a high linear velocity through the injection port to diminish band broadening and transferring all the samples to column, flash vaporization.