| Reagent |
Quantity (for 200 mL) |
Final concentration |
| MgCl2 (2 M)
|
5 mL |
50 mM |
| NaCl (5 M) |
4 mL |
100 mM |
| Tris-Cl (1 M, pH 9.5)
|
20 mL |
100 mM |
| Tween 20 |
200 μL |
0.1% |
| H2O
|
to 200 mL |
|
| There is no need to adjust the pH if a Tris-Cl stock solution is used. This solution should be prepared fresh before use.
It can be stored for 12-24 h at room temperature. Precipitates form when stored for longer periods.
|