We compared the Nernstian slope and the response range of a solid contact electrode based on Dibenzylnaphthalenemethylamine ionophore with those based on Dibenzylaminodiphenylmethane Ionophore and Tribenzylamine Ionophore. Their Nernstian slopes showed, respectively, 59.1, 59.1, 55.1 mV/pH (at 20 ± 0.2℃). Also, the linear pH response dynamic ranges were pH 0.65 - pH 10.0 for Dibenzylnaphthalenemethylamine ionophore based SCEs, pH 0.80 - pH 9.70 for Dibenzylaminodiphenylmethane, pH 2.48 - pH 11.21 for Tribenzylamine. When the Nernstian slope and the response range are considered, as the numbers of phenyl ring increased in the Ionophore, their response ranges moved toward acidic range. And when we compared the SCEs based on Dibenzylnaphthalenemethylamine ionophore with those based on Dibenzylaminodiphenylmethane Ionophore, though the Nernstian slopes of these electrodes show the same results, their response ranges of SCEs based on Dibenzylnaphthalenemethylamine were wider than SCEs based on Dibenzylaminodiphenylmethane Ionophore. When it was directly applied to the artificial serum (in pH range 6.0 - 8.5), we could obtain the same satisfying results and, especially, SCEs showed very good results such as the stabilization of base potential, the best selectivities, reproducibility, stabilization time and the response time.