515.5 g/kg = 518.026 PSU
| g/kg | PSU |
|---|---|
| 500.5 g/kg | 502.952 |
| 505.5 g/kg | 507.977 |
| 510.5 g/kg | 513.001 |
| 515.5 | 518.026 |
| 520.5 g/kg | 523.05 |
| 525.5 g/kg | 528.075 |
| 530.5 g/kg | 533.099 |
515.5 g/kg = 518.026 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)