The use of an empty, straight injector liner, as recommended by my father, made sense as long as sample evaporation inside a hot syringe needle supported nebulization of the sample at the needle exit. However, with the introduction of fast auto samplers, conditions have changed and sample evaporation must be reconsidered. This will be the subject in one of my next Korners. Conclusions There has never been a comprehensive, professional investigation resulting in a convincing design of the splitless injector. In contrast to most other products marketed, such as cars or airplanes, the supplier carries no responsibility.
Analytical chemistry relies on the know-ledge of the analyst.
He is responsible for choosing the right instruments and using analytical techniques correctly. Unfortunately, reality is often different, as demonstrated by unoptimized splitless injector designs and improper operating parameters. It would take a lot of money and a concerted effort by all instrument manufacturers and analysts to perfect the splitless injection technique. Maybe combined forces will be more successful. Analysts should publish their observations as well their ideas on what can be improved.