| Reagent (final concentration) |
For 4 L |
For 500 mL |
For 100 mL |
| Boric acid (100 mM)
|
24.74 g |
3.09 g |
0.62 g |
| NaCl (75 mM) |
17.54 g |
2.19 g |
0.44 g |
| Sodium tetraborate (25 mM) |
38.14 g |
4.77 g |
0.95 g |
|
| Dissolve the ingredients in H2O. Use a stir bar and low heat to ensure that the boric acid dissolves fully. Sterilize by vacuum-filtration with a 0.22-μm
filter. Adjust the pH to 8.4.
|