The Gas Mixing Station supports a fully automated mode of operation. Gas to be mixed are supplied to the gas mixer and analyzed using the integrated CO2 and O2 sensors. The sensors determine the content of a certain gas in the gas mixture. If the desired gas content in the gas mixture is not reached, venting through the HEPA filter is activated and continues until the desired gas content is reached. The received gas mixture is sterile and supplied at a flow rate and under the pressure required by a user.