561.5 g/kg = 564.251 PSU
| g/kg | PSU |
|---|---|
| 546.5 g/kg | 549.178 |
| 551.5 g/kg | 554.202 |
| 556.5 g/kg | 559.227 |
| 561.5 | 564.251 |
| 566.5 g/kg | 569.276 |
| 571.5 g/kg | 574.3 |
| 576.5 g/kg | 579.325 |
561.5 g/kg = 564.251 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)