Reagent 2
| Reagent | Final concentration |
|---|---|
| Acetic acid | 0.35 mm |
| Sodium citrate | 70 mm |
| Sodium-(m)-arsenite | 150 mm |
| Reagent 2 can be stored at room temperature for up to 6 mo. Caution: Arsenite is highly toxic. Note that all the wastes containing arsenite should be handled according to local safety rules. | |
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