Mercury drop working electrodes are invaluable for certain applications due to their high overpotential for hydrogen ion reduction and the high reproducibility of the electrode surface.
Mercury drop electrodes are generated by the BASi® Controlled Growth Mercury Electrode (CGME) in three modes:
The CGME mode is available only on the BASi 100B/W and the CV-50W, whereas the SMDE mode is available with any PC- or microprocessor-controlled potentiostat (including the EC epsilon EClipse). The dispense and knock functions can also be manually controlled, so a Hanging Mercury Drop Electrode can be generated manually (e.g., for stripping experiments using the CV-27).
A built-in gas control allows purging or blanketing of the sample prior to or during analysis, and there is a magnetic stirrer for experiments requiring convection, such as stripping voltammetry. The cell arm with detachable cell top allows easy access to the electrodes for rinsing and cleaning, and the cell top is also compatible with BASi® voltammetry working electrodes. The stir motor/cell vial base pivots for easy removal and replacement of the cell vial.
Please note that mercury is not included with the CGME due to shipping regulations. Please purchase triply- or quadruply-distilled mercury from a company that is licensed to ship mercury.
|Cell Modes||CGME, SMDE, and DME|
|Operations||Manual and remote control of mercury dispense; drop knocker; stir on/off; gas purge/blanket|
|Magnetic Stirrer||16 selectable rates from 50-800 rpm|
|Mercury Reservoir||Sealed reservoir minimizes opportunity for mercury spills. Minimal use of metal parts within reservoir or capillary to avoid metal contamination.|
|Mercury Degassing||Mercury degassing kit is included with purchase and includes a hand-actuated vacuum pump and accessories|
|Spill Management||Spill tray and mercury pickup tool are included in the standard package|
|Standard Capillary||150 µm (0.006 ") ID. Large diameter reduces plugging and loss of electrode contact. Beveled tip design|
|Gas Purging||5 psi max. Needle valve controlled.|
|Cell Top||Separate port in cell top for dispensing sample or reagents. Accommodates BASi® voltammetry electrodes for use as a cell stand for voltammetry experiments.|
|Options||100 µm ID capillary
Small volume and water-jacketed cell vials
|Physical||42 x 18 x 23 cm (H x W x D)