387.5 g/kg = 389.399 PSU
| g/kg | PSU |
|---|---|
| 372.5 g/kg | 374.325 |
| 377.5 g/kg | 379.35 |
| 382.5 g/kg | 384.374 |
| 387.5 | 389.399 |
| 392.5 g/kg | 394.423 |
| 397.5 g/kg | 399.448 |
| 402.5 g/kg | 404.472 |
387.5 g/kg = 389.399 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)