425.5 g/kg = 427.585 PSU
| g/kg | PSU |
|---|---|
| 410.5 g/kg | 412.511 |
| 415.5 g/kg | 417.536 |
| 420.5 g/kg | 422.56 |
| 425.5 | 427.585 |
| 430.5 g/kg | 432.609 |
| 435.5 g/kg | 437.634 |
| 440.5 g/kg | 442.658 |
425.5 g/kg = 427.585 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)