Gas Liquid Chromatography is a standard chromatographic method where computations of gaseous form or vaporised form. The purity of a substance can be determined with the help of Gas Liquid Chromatography. Open access journals are peer-reviewed journals for studies in the Journal of Chromatography and Segment Techniques. Top accessibility journals are freely available on the public internet domain, allowing any end users to read, download, copy, distribute, print, search or link to full text articles. This provides high quality, updated and quickly published, in order to cater to the needs of the scientific community. These journals contain references to all their references. Top accessibility journals are opened in SCOPUS, COPERNICUS, CAS, EBSCO and ISI.