597.5 g/kg = 600.428 PSU
| g/kg | PSU |
|---|---|
| 582.5 g/kg | 585.354 |
| 587.5 g/kg | 590.379 |
| 592.5 g/kg | 595.403 |
| 597.5 | 600.428 |
| 602.5 g/kg | 605.452 |
| 607.5 g/kg | 610.477 |
| 612.5 g/kg | 615.501 |
597.5 g/kg = 600.428 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)