Syringes can also be used to inject medical devices, containers, and scientific instruments such as some chromatography methods through a rubber septum. Injecting gas into the blood vessel will cause air embolism. The way to remove air from the syringe to avoid embolism is to invert the syringe, tap it gently, and then squeeze out a little liquid before injecting it into the bloodstream.
In some occasions where accuracy is not the primary concern of bacteria, such as quantitative chemical analysis, glass syringes are still used because of small errors and smooth movement of the push rod.
You can also use the syringe to inject some juice into the meat to improve the taste and texture when cooking meat, or to inject it into cakes during baking. The syringe can also fill ink into the ink cartridge.