CGME Cell Stand

The CGME Cell Stand is a controlled growth mercury electrode for polarography experiments. 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. It has an integrated magnetic stir plate and gas purge function that can be controlled manually or remotely. The BASi CGME cell stand has three modes for generating a mercury drop electrode. CGME (Controlled Growth Mercury Electrode) allows the drop size to be determined by the length of time that the fast response capillary valve is opened and the drop is dislodged by the knocker. This mode can be used to generate the hanging mercury drop electrode required for stripping experiments. DME (Dropping Mercury Electrode) allows mercury to flow freely from the reservoir down the capillary and so the growth of the mercury drop and its lifetime is controlled by gravity. The optional 100 µm capillary is recommended for this mode. SMDE (Static Mercury Drop Electrode) allows the drop size to be determined by the length of time that the fast response capillary valve is opened and the drop is dislodged by the knocker. The dispense/knock timing is microprocessor controlled and is typically coordinated with the potential pulse or square wave waveform.


  • Wide range of drop sizes
  • Programmable drop growth with the BASi 100B/W and CV-50W
  • DME, SMDE, and CGME modes
  • HMDE available in SMDE and CGME modes
  • Good electrical contact minimizes electrode resistance
  • Fast response time
  • Rapid drop stabilization
  • Small volume glass cell vials
  • Water-jacketed cell vial
  • Cell top compatible with BASi® voltammetry electrodes
  • Standard addition port
  • Quick-connect input gas line connector
  • Easy maintenance
  • Minimal metal contact reduces metal contamination
  • Self-contained power supply
  • Mounted magnetic stirrer with 50-800 rpm
  • Manual and remote control of mercury dispense, drop knock, stirrer on/off, inert gas purge/blanket
  • Minimal chance of mercury spills

Please note that mercury is not included with the CGME due to shipping regulations. Please purchase triply- distilled or quadruply-distilled mercury from a company that is licensed to ship mercury.

CGME Cell Stand

 Part Number  Description










CGME cell stand package 
(please specify power requirements)
Sytems Includes:

ER-9515 Ribbon cable
CGME cell accessories kit includes:
ER-9132 Teflon coated stir bar (1)
MF-1028 Replacement valve seal
MF-2052 RE-5B Ag/AgCl reference electrode (3)
MF-2069 Mercury collector rod (1)
MF-2090 Beveled glass capillary – 150µm (2)
MF-1208 Glass voltammetry cell vial (12)
Low volume cell vial (2)
MW-1032 Platinum wire aux electrode (1)
MW-1034 Cell top plug (1)
MW-4601 Mercury trap (1)
MF-7150 Vacuum priming pump accessory (1)
MR-5275 Reference electrode storage vial with cap

 Other accessories

 Part Number  Description
EF-9132 Magnetic stir bar
MR-3818 Teflon cell top
MF-1208 Glass cell vials 12-pack
MR-1205 Teflon cell vial
MR-1212 Water jacketed glass cell vial
MF-2090 Capillary assembly, 150 µm ID
MF-2092 Capillary assembly, 100 µm ID
MF-2052 3x Ag/AgCl reference electrode
MR-5275 Reference electrode storage vial
MW-1032 Platinum wire counter electrode
MW-1034 Cell top plug
EW-4366 Replacement gas solenoid assembly
MW-4601 Mercury Trap
MF-7150 Vacuum prime pump
MF-2093 CGME septum
MF-1028 CGME valve seal
MR-2052 2” blunt tip needle
MR-1241 O-ring for working electrode contact
MR-3850 Spill tray
MF-2048 CGME o-ring replacement kit
MR-5023 Syringe, plastic, 5 mL


  • Inlet Gas Pressure: 5 psi
  • Power: 100-240 VAC, 50/60 Hz
  • Dimensions: 42 cm (16.5”) height x 18 cm (7”) width x 23 cm (9”) depth
  • Weight: 13 lbs