Liquid junction potential measurements for solutions used in Fig. 7
| Panels in Fig. 7 | Ek | Intracellular | Extracellular | L.J. potential |
| mV | mM | mM | mV | |
| A and B | 6.6 | 80 NaCl, 200 KCl | 10 NaCl, 200 KCl, 60 KF | 0.40 ± 0.2 |
| C–E | 40 | 120 NaCl, 30 KCl | 90 KCl, 60 KF | 3 ± 0.4 |
| E | 20 | 80 NaCl, 70 KCl | 90 KCl, 60 KF | 2.6 ± 0.1 |
| C and E | 0 | 150 KCl | 90 KCl, 60 KF | 0.60 ± 1.1 |
| Panels in Fig. 7 | Ek | Intracellular | Extracellular | L.J. potential |
| mV | mM | mM | mV | |
| A and B | 6.6 | 80 NaCl, 200 KCl | 10 NaCl, 200 KCl, 60 KF | 0.40 ± 0.2 |
| C–E | 40 | 120 NaCl, 30 KCl | 90 KCl, 60 KF | 3 ± 0.4 |
| E | 20 | 80 NaCl, 70 KCl | 90 KCl, 60 KF | 2.6 ± 0.1 |
| C and E | 0 | 150 KCl | 90 KCl, 60 KF | 0.60 ± 1.1 |
The solutions used in Fig. 7 are listed above, with liquid junction (L.J.) potentials being measured three times for each pair of solutions in a planar lipid bilayer setup. Errors represent standard deviations calculated from three different measurements.