Generally a Gas Purification System is supplied to cater the need for a number of Gas Chromatographs. In order to make each Gas Chromatograph operationally independent, one has to use a Mini Gas Station with each Gas Chromatograph with ON/OFF valve for each gas. These are normally fitted on the wall or the Instrument table from where the Gas Purification Panel is visible to indicate the gas inlet & the delivery pressure to the instrument.