Internal capillary glass microelectrodes with a glass seal for pH, sodium and potassium.
D001826:Body Fluids / Q000032:analysis; D005898:Glass; D006863:Hydrogen-Ion Concentration; D008832:Microchemistry / Q000295:instrumentation*; D011188:Potassium / Q000032:analysis*; D011199:Potentiometry / Q000295:instrumentation*; D012964:Sodium / Q000032:analysis*
D012964:Sodium; D011188:Potassium