title: Evaluation of an instrument (Nova-1) for direct potentiometric analysis of sodium and potassium in blood and their indirect potentiometric determination in urine.
mesh_terms: D001322:Autoanalysis; D006801:Humans; D006863:Hydrogen-Ion Concentration; D011188:Potassium / Q000097:blood* / Q000652:urine; D011199:Potentiometry / Q000379:methods; D012964:Sodium / Q000097:blood* / Q000652:urine
chemical_list: D012964:Sodium; D011188:Potassium