Rotating Disk Electrode

Model ATA-1B Rotating Disk Electrode------serial products of polarographic analytical instruments Model ATA-1B rotating disk electrode (RDE) is an important tool for electrochemistry analysis, the electrode includes a conductive disk embedded in an inert non-conductive polymer or resin that can be attached to an electric motor that has very fine control of the electrode's rotation rate. The disk, like any working electrode, is generally made of a or , however any conductive material can be used based on specific needs. As the disk turns, some of the solution described as the hydrodynamic boundary layer is dragged by the spinning disk and the resulting flings the solution away from the center of the electrode. The rate of the solution flow can be controlled by the electrodes angular velocity and modeled mathematically. This flow can quickly achieve conditions in which the steady-state current is controlled by the solution flow rather than diffusion. By running and other experiments at various rotation rates, different electrochemical phenomenon can be investigated, including multi-electrons transfer, the kinetics of a slow electron transfer, adsorption/desorption steps, and . Specifications: · Rotating speed: 100 to 8000 r/min · Accuracy: 0.5% F·S ± 2 digits · Rotation stability: < 1% when speed is more than 1500 r/min < 20 r/min when speed is less than 1500 r/min · Radial swing of electrode head: ≤0.05 mm · Insulation resistance: >10MΩ · Display: 4-digit LED · Dimension: 2100mm×240mm×320mm · Power: <25W Characteristics: · Stable rotation · Continuous adjustment · Precise and reliable performance · Wide rotational speed range