| Formamide (spectral grade; IBI Scientific IB72020)
|
25 mL |
50% (v/v) |
| 20X SSC
|
12.5 mL |
5X |
| 20% Tween 20 (Sigma-Aldrich P1379) |
250 μL |
0.1% (v/v) |
| H2O (sterile)
|
to 50 mL |
-- |
|
| To adjust the pH to 6.0, add 460 μL of 1 M citric acid (to a final concentration of 92 mM). |
| Store at -20°C. |