Table 1.
External Solutions used for electrophysiology (Concentration in mM)
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
|---|---|---|---|---|---|---|---|---|
|
| ||||||||
| Purpose | normal | Na+ | Ca2+ | No Ca2+ | Cl− removal | isoosmotic | Hypoosmotic | hypoosmotic |
| NaCl | 135 | - | 125 | 135 | 29 | 110 | 110 | - |
| KCl | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | - | - | - |
| NaH2PO4 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | - | - | - |
| HEPES | 5 | 5 | 5 | 5 | 5 | 10 | 10 | 10 |
| MgCl2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| CaCl2 | 2 | 2 | - | - | 2 | 1 | 1 | 1 |
| BaCl2 | - | - | 10 | - | - | - | - | - |
| glucose | 5 | 5 | 5 | 5 | 5 | - | - | - |
| NMDG | - | 135 | - | - | - | - | - | - |
| TEA | - | - | 5 | - | - | - | - | - |
| Gluconic acid | - | - | - | - | 106 | - | - | 110 |
| mannitol | - | - | - | - | - | 300mOsm | 230mOsm | 230mOsm |
| pH | 7.4 | 7.4 | 7.4 | 7.4 | 7.4 | 7.3 | 7.3 | 7.3 |