453.5 g/kg = 455.722 PSU
| g/kg | PSU |
|---|---|
| 438.5 g/kg | 440.649 |
| 443.5 g/kg | 445.673 |
| 448.5 g/kg | 450.698 |
| 453.5 | 455.722 |
| 458.5 g/kg | 460.747 |
| 463.5 g/kg | 465.771 |
| 468.5 g/kg | 470.796 |
453.5 g/kg = 455.722 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)