531.5 g/kg = 534.104 PSU
| g/kg | PSU |
|---|---|
| 516.5 g/kg | 519.031 |
| 521.5 g/kg | 524.055 |
| 526.5 g/kg | 529.08 |
| 531.5 | 534.104 |
| 536.5 g/kg | 539.129 |
| 541.5 g/kg | 544.153 |
| 546.5 g/kg | 549.178 |
531.5 g/kg = 534.104 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)