Table 2.

Repeatability data of sensors 2 and 10 against Ba²⁺ solutions with different concentrations

Sensor	Concentration, M	Potentials, mV
		I	II	III	Average (± SD)
2	1.0 × 10–2	1216.75	1219.94	1218.75	1218.48 (± 1.32)
	1.0 × 10–3	1193.56	1193.50	1192.81	1193.29 (± 0.34)
	1.0 × 10–4	1164.38	1166.81	1166.75	1165.89 (± 1.13)
10	1.0 × 10–2	1201.19	1198.19	1198.5	1199.29 (± 1.35)
	1.0 × 10–3	1171.69	1170.19	1168.5	1170.12 (± 1.30)
	1.0 × 10–4	1141.69	1142.56	1138.69	1140.98 (± 1.65)