title: Determination of [K+] in blood serum with a valinomycin-based silicone rubber membrane of universal applicability to body fluids.
mesh_terms: D006801:Humans; D008567:Membranes, Artificial; D011188:Potassium / Q000097:blood*; D011199:Potentiometry; D013053:Spectrophotometry
chemical_list: D008567:Membranes, Artificial; D011188:Potassium