The best thing is that it brings out the accurate results within a very short span of time. The reason behind calling it Gas Chromatography is that the whole process is accomplished using a gas chromatography which is an analytical instrument. Without it, the process cannot be accomplished as it plays a crucial role to examine the content of various components in a sample.
Actually, the organic compounds get separated from each-other because of difference in their portioning behavior during the mobile gas phase. It also goes through the stationary phase in the column. During the mobile phase, they generally insert gases like argon, nitrogen or helium. The injection port holds a rubber septum, which makes possible to inject the sample using a syringe needle.