This PEM Electrolyzer test bench is a highly accurate laboratory instrument designed to evaluate the performance of Proton Exchange Membrane (PEM) electrolytic water single cells. The equipment provides a wide range of electrochemical performance tests, including power supply to the electrolyser, supply voltage within 20V 150A, with a variety of CC, CP, CC, modes, detecting hydrogen production from the anode-cathode of the electrolyser, gas-liquid separation, temperature control of the circulating water, detecting the hydrogen-oxygen concentration, and high test sampling accuracy to meet the needs of PEM research and development.