588.5 g/kg = 591.384 PSU
| g/kg | PSU |
|---|---|
| 573.5 g/kg | 576.31 |
| 578.5 g/kg | 581.335 |
| 583.5 g/kg | 586.359 |
| 588.5 | 591.384 |
| 593.5 g/kg | 596.408 |
| 598.5 g/kg | 601.433 |
| 603.5 g/kg | 606.457 |
588.5 g/kg = 591.384 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)