| MgCl2 (1 M)
|
0.5 mL |
50 mM |
| NaCl (5 M)
|
0.2 mL |
100 mM |
| Tris-Cl (1 M, pH 9.5)
|
1 mL |
100 mM |
| Tween 20 (20%) |
0.25 mL |
0.5% |
| H2O
|
to 10 mL |
|
| This buffer can be prepared with or without MgCl2.
|
| Make sure to use a fresh stock of Tween 20; if it is not fresh, the buffer will turn cloudy. |
| Prepare buffer the same day it is to be used; store at room temperature. |