An in-house lab-scale 6-column Pressure/Vacuum Swing Adsorption (PVSA) rig has been designed and is being constructed as of November 2013. The PVSA rig can demonstrate continuous operation of separating a gas mixture using adsorption to produce a high purity of product. It is designed to enable different connections among the 6 columns to operate the system with various step configurations, such as single-stage configuration incorporation pressure equalisation, heavy and light refluxes or two-stage operation for bulk separation and subsequent purification.