35,640 mg/L = 35.815 PSU
| mg/L | PSU |
|---|---|
| 35,625 mg/L | 35.8 |
| 35,630 mg/L | 35.805 |
| 35,635 mg/L | 35.81 |
| 35,640 | 35.815 |
| 35,645 mg/L | 35.82 |
| 35,650 mg/L | 35.825 |
| 35,655 mg/L | 35.83 |
35640 mg/L = 35.815 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)