Electrodes & Accessories
- Carbon fiber microelectrodes have been used in both the detection of oxidizable compounds (Gonon, et al., 1978; Cahill and Wightman, 1995) and extracellular single-unit recording (Armstrong-James and Millar, 1979). WPI’s ultra-sensitive and low-noise carbon fiber (CF) electrodes can be applied, with our Micro-C Potentiostat or similar instruments, in the electrochemical detection of catecholamines (epinephrine, norepinephrine and dopamine), indolamines (serotonin, 5-HT or melatonin), ascorbic acid, Fe (II), and other oxidizable compounds.
- Our ion selective electrodes are highly stable, accurately measuring calcium, potassium, hydrogen and TPP ion activity. Tips consist of 2 mm diameter plastic tubes sealed at one end with an ion-sensitive membrane. After filling the ion selective electrodes with electrolyte solution, you can insert the tube into the holder and connect it to a pH meter. Tips and holders are interchangeable, so one tip may be replaced with another sensitive to a different ion. Replacing a tip takes less than a minute. Electrode tips normally last several months, when stored properly in saline solution. When replacement is necessary, only the tip needs be replaced. Kwik-Tip electrodes are available separately and as kits. A separate reference electrode, such as WPI’s Dri-Ref™, is also required.
- Dri-Ref™ reference electrodes were developed by WPI to have extremely low electrolyte leakage properties. In addition to this key feature, these electrodes exhibit stable and reproducible potential and low resistance. Stored in KCl when not in use, they have a long life expectancy. Although the internal filling solution contains KCI, the low fluid leakage means Dri-Ref may be used in combination with ion selective electrodes, including those for K+ and Cl-, without significant contamination from the reference electrode. The Dri-Ref electrodes are chemically resistant to strong acids and alkalines. Dri-Ref electrodes are not suitable for use in organic solvents. In addition, the long, thin FLEXREF may be easily manipulated to accommodate a difficult experimental setup.