457.5 g/kg = 459.742 PSU
| g/kg | PSU |
|---|---|
| 442.5 g/kg | 444.668 |
| 447.5 g/kg | 449.693 |
| 452.5 g/kg | 454.717 |
| 457.5 | 459.742 |
| 462.5 g/kg | 464.766 |
| 467.5 g/kg | 469.791 |
| 472.5 g/kg | 474.815 |
457.5 g/kg = 459.742 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)