624.5 g/kg = 627.56 PSU
| g/kg | PSU |
|---|---|
| 609.5 g/kg | 612.487 |
| 614.5 g/kg | 617.511 |
| 619.5 g/kg | 622.536 |
| 624.5 | 627.56 |
| 629.5 g/kg | 632.585 |
| 634.5 g/kg | 637.609 |
| 639.5 g/kg | 642.634 |
624.5 g/kg = 627.56 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)