title: A comparison of the selectivities of microelectrodes incorporating the Orion and Corning liquid ion exchangers for potassium over sodium.
abstract: The K+:Na+ selectivities of double-barrelled microelectrodes employing either of two commercially available liquid ion exchangers for K+ (Corning 477317 and Orion) have been measured using several calibration methods. Microelectrodes employing the Orion exchanger were found to be much less selective than those based on Corning 477317.
mesh_terms: D004594:Electrophysiology / Q000295:instrumentation*; D007474:Ion Exchange; D008839:Microelectrodes; D009474:Neurons / Q000378:metabolism*; D009482:Neurophysiology / Q000295:instrumentation*; D011188:Potassium / Q000378:metabolism*; D012964:Sodium / Q000378:metabolism*
chemical_list: D012964:Sodium; D011188:Potassium