| Stock solution (made in diH2O) or powder | Molarity in Final Solution (mM) | For 100 mL 40 mM K+ |
| NaCl (1.45 M) | 105 | 7.27 mL |
| KCl (500 mM) | 40 | 8.0 mL |
| MgSO4 (100 mM) | 0.8 | 0.8 mL |
| CaCl2 (200 mM) | 1.8 | 0.9 mL |
| Dextrose | 20 | 0.360 g |
| HEPES | 20 | 0.477 g |
| diH2O | 86.93 mL |
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